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This is a bound printed documentation set for the SICO(Superior Instruments Co. TW-11 emission tube tester. This is everything you would need to use your ... moreTW-11 tube tester. Schematic and service notes are included in case you need to fix yours. Also included in the documentation set is a copy of the original. 1956 roll chart. This is important to have if your TW-11's roll chart is broken or missing because the supplements don't include the tubes on the roll chart. Speaking of supplements, I'm including two, one dated November 1963 an older one that I think is from 1958. Plus, to round out the documentation set, I'm including an edited copy of the TV-11's supplement that includes more tubes, namely the 6CA7(EL34) The edits fix some chart errors in the original TV-11 supplement. Instructions for how to use the TV-11 chart with the TW-11 are included. This is as complete a documentation set for the TW-11 that you'll find. I've owned several of these and made sure to include what you would need for yours. All the copies are excellent and easy to read. As needed. Gray-scale prints were used to enhance legibility- especially of the instrument pictures. Please let me know if you have any questions. Thanks
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Location: Monongahela,PA,USA
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If your looking to purchase a TUBE TESTER read this information first before you invest your $$$. There isn't a better collection of information all ... morerelated to tube testers ever. This book is a very nice comb-bound book containing 12 articles and guide to TUBE TESTERS. Please Note. All information in this book are copies, using the latest laser copiers, from orginal magazines articles. Here is what you get; Article 1. TEST NEW TUBES ON OLD TUBE TESTERS This ARTICLE is a must have information for owners of Hickok and other Quality Tube Testers. It is for checking tube types which are not listed in your roll Charts or in your data books, even new tubes from Russia and other parts of Europe, No matter what type the tester is, emission or transconductance, if it has a free-point switching arrangement which(most of the Hickoks and others have) allows a full choice of connections to any socket pin or any element of the tube, and a suitable filament supply, from 1.1 to 117 volts, it can be set up to test any standard receiving tube. With the proper techniques old tube testers can virtually test any Tube. THIS ARTICLE EXPLAINS HOW TO DO IT. The article uses an Hickok 532 in this example, but most other tube testers can also be used. Article 2. FINE POINTS ON TUBE TESTING, A very helpful article, talking about the five Basic tests, used on tube testers. 1) Shorts test 2) Emission test 3) Transconductance test 4) Gas test 5) Filament- current test Article 3. WHY TUBES FAIL PREMATURELY, A very helpful article, talking about the manufacturers ratings of the tube and that these ratings must not be exceeded. Article 4. YOUR SHOP TUBE TESTER WILL HELP BUILD PRESTIGE Talks about mutual conductance type tube testers, these type of tube testers, give a true picture of a tubes condition, and uses a Hickok Model 533 in this example. Article 5 TUBE TESTERS FOR SPEEDY CHECKING. Talks about certain tube testers which operate is a speedy manner. B&k model 500, Teletest model T-56 Article 6 MEASURING RESISTANCE BETWEEN TUBE ELEME
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This is a complete kit! Super great shape tested and works great. I priced this lowest on ebay for quick sale so hurry Posted with
Original Manual for Superior TW-11 Tube Tester good condition FREE SHIPPING!
Check out my! We are liquidating a large estate from southern New Jersey. This estate consists of a large amount of paper items; Vintage Advertising, Cookbooks, Boating and Mechanical Magazines, household items, early automobile, as well as vintage tools& furniture. All items are sold as is, and our pictures should be considered part of the items description. If you are in doubt PLEASE ASK FOR MORE PHOTOS or DETAILS before bidding or buying from our store or our auctions. WE believe a picture says a THOUSAND WORDS, all sales are Final. Email your request thru E bay and we will provide more info or details within 48 hours of your request. SOME ITEMS CAN BE DELIVERED WITHIN A 50 MILE Radius of zip code 08077. ASK FOR A PRICE QUOTE. WE DO NOT ACCEPT RETURNS ON OUR ESTATE SALES, UNLESS PROOF OF MISREPRESENTATION.
FOR SALE IS A VINTAGE SUPERIOR INSTRUMENTS TW-11 TUBE TESTER. COMES WITH BUILT-IN CARRY CASE AND MANUAL. ALTHOUGH CARRY CASE LID IS BROKEN. UNSURE OF THE WORKING CONDITION. BEING SOLD AS IS. SHIPPING COST TO CONTINENTAL US ONLY. OTHER AREAS MAY VARY.
This is a vintage tube tester by Superior Instruments from New York. It is from late 1950s. Housed in a wood case and comes with papers as shown. It is in a good condition. I took it to the King's Amplification shop in Los Gatos, California to check it out, and it was found to be in a good order. See photos.Shipping is $25 extra in the US. As the piece is heavy. A great piece. No reserve! By bidding on this item. You fully agree to all of the following terms and conditions: Buyer will prepay shipping, handling and insurance charges. Insurance at cost is optional for most items, but if you decide to omit it, you are assuming all risk- should item get lost or damaged, no remedy will be given. Shipping is provided at a fixed cost and includes handling, cost of packaging, etc. If the actual shipping costs more you will not be asked to pay ... morethe difference, if it's less likewise there will be no refund. Payment must be received within 10 days after auction closes.
Up for auction from a bankrupt company. For auction is a Nice Clean Superior SICO TW-11 TUBE TESTER from Ham operators estate Works but selling as found in his workshop. See the photos to determine condition and your bid. WE WILL COMBINE SHIPPING ON additional MULTIPLE ITEMS. Please see our photos to determine the condition. And your estimate for bidding. Remember your bid + the shipping plus handling is the total price you pay for the item. If you purchase similar items. We will combine shipping& Handling to save you money Please note we generally go to the post office once a week and ship via parcel post[ up to 9 days delivery] but if you wish to upgrade to priority just email for the additional fee. WE USE AN OUTSIDE SOURCE FOR S&H SO THE FEES ARE A BIT MORE THAN JUST THE POSTAGE ALONE Thanks for bidding. If you pick it up you ... moremay pay for it then. We are located in Hamburg, NJ or you may pay through Paypal or any other accepted ways permitted by Ebay. Thank you. TO VIEW OUR OTHER ITEMS CLICK HERE Please email for shipping costs outside the continental US.
Manual dated 1956. Tester works. Electric cord in good condition. Tester cord also good. Nice clean box and unit. Also comes with 1 thru 4 supplements of the Receiving tube substitution guide books from 1951 to 1960. Books all in good shape. This is a heavy package. Serious bidders only please.
SUPERIOR INSTRUMENTS( SICO) TUBE TESTER– CHECKER TW-11 IN WOODEN BOX Powers up and works. And all switches work. No instruction manual included. Scroll chart with tube test data moves freely. Hand written notes were taped inside the case by a previous owner. Electric power plug was taped by previous owner and needs to be replaced. The plastic meter cover has several small cracks at the sides and bottom. But this does not affect meter operation. Wood box in good condition with some small nicks and scratches. Please see the photos. This item is available for bidders located in the lower 48 contiguous states of the United States only. PA residents must pay the state sales tax. Please contact me with any questions.
COLLECTIBLE OLD VINTAGE TUBE TESTER with 4 original TV TUBES. Made by Superior Instrument Company. Model TW-11, the hinged folding gray case includes tester, 5 TV tubes and electrical cord. All in original working condition. Picture shown with tubes inserted. simple and straightforward to set up and use. It will test for shorts, leakage, and even microphonics, with a magnetic headphone plugged into the service jack. It may or may not catch grid emission(that would show up as leakage) but it is still adequate for most jobs that don't require precision testing. Excellent condition, with a few wear marks on the outside of the case. Payment: I accept PAYPAL and all other forms of payment. I will ship USPS immediately upon payment. Please contact me before bidding if there are any questions or concerns. Customer Service is our Motto. Powered ... moreby The free listing tool. List your items fast and easy and manage your active items.
Superior Instruments TW-11 Tube Tester Good Clean Works W Books This is a good used tube tester that I do not need anymore Tests for quality. Shorts, leaks, overall condition of tube The select-able dial can be difficult to move upward but not downward. Something the previous owner'accidentally' failed to mention then demanded positive feedback Look closely at dial photo- its a little bent in but could be fixed if taken apart and still works fine I have tested many tubes with this tester without any problems& it is VERY easy to learn Sockets are tight. Metal is clean, lights and switches work great, and supplement books are nice to have Wooden case is in great condition and this tester is much lighter than most Satisfaction is always Guaranteed with our items We ship quickly and safely with tracking every Tuesday and Friday@ 12pCST ... moreHigh seller ratings mean a lot to us and feedback is greatly appreciated! Thank you for looking and please visit our store!
Superior Instruments Co. TW 11 Tube Tester Checker wooden box w instructions included. Unknown working condition- plug and cord look OK. It tests all the common audio and amp types as well as less commons too. Case is solid but has some chipping of the veneer on top and bottom. Overall a nice unit. Helena Montgomery Jefferson City Cheyenne Jackson Madison Saint Paul Charleston Olympia Lansing Los Angeles Chicago Houston Philadelphia Phoenix San diego San Antonio Dallas Detroit San Jose Indianapolis Jacksonville San Francisco Columbus Houston Memphis Baltimore Charlotte Fort Worth Boston Milwaukee El Paso District of Columbia Nashville Seattle Denver Las Vegas Portland Tucson Albuquerque Atlanta Long Beach Denver Las Vegas Oklahoma City Kansas City Fresno New Orleans Cleveland Sacramento Mesa Colorado Springs Oakland Miami Tulsa Minneapolis ... moreHonolulu Arlington Wichita St. Louis Raleigh Santa Ana Cincinnati Anaheim Tampa Toledo Pittsburgh Aurora Bakersfield Riverside Stockton Corpus Christi Lexington Buffalo St. Paul Anchorage Newark Plano Fort Wayne St. Petersburg Glendale Lincoln Norfolk Jersey City Greensboro Chandler Birmingham Henderson Scottsdale North Hempstead Madison Hialeah Baton Rouge Chesapeake Orlando Lubbock Garland Akron Reno Chula Vista Rochester Laredo Durham Modesto Huntington Montgomery Boise Arlington San Bernardino Christmas holiday gift birthday Boston Richmond Montpelier Juneau Salt Lake City Annapolis Augusta Austin Nashville Baton Rouge Lincoln Phoenix Concord Little Rock Carson City Sacramento Trenton Denver Santa Fe Hartford Albany Dover Raleigh Bismarck Tallahassee Atlanta Columbus Honolulu Boise Springfield Oklahoma City Frankfort Pierre Columbia Salem Harrisburg Providence Indianapolis Topeka Des Moines Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York
SEEMS UNUSED SUPERIOR INSTRUMENTS MODEL TW-11 TUBE TESTER& TUBE DATA LISTS LOOKS NEW AND UNUSED SUPERIOR INSTRUMENTS MODEL TW-11 TUBE TESTER AND TUBE DATA LIST- GREAT FOR TESTING THOSE EARLY 4.5,6,7 PIN, OCTAL, LOCTAL, 7& 9 PIN MINIATURE TUBES- LARGE METER INDICATES GOOD-BAD- TESTS FOR SHORTS AND LEAKAGE- TESTS FOR QUALITY- INCLUDES THE ACTUAL ORIGINAL INSTRUCTION AND TUBE SETTINGS DATA AS WELL AS THE SUPPLEMENTAL TUBE DATA LIST AND THE OBSOLETE TUBE SETTING LIST PHOTOS ARE THE ACTUAL SUPERIOR MODEL TW-11 TUBE TESTER SHOWN ACTUALLY TESTING A 6L6GC Front panel and meter appear new. Includes AC power cord and Grid/Plate lead. Appears to be working fine- I've tested several tubes and the results are fine. Will test almost all early tubes. WILL NOT test later sweep tubes. Buyer to add $18. shipping(USA) QUESTIONS? Please contact me ... morebefore bidding. PAYMENT INFORMATION: I don't use the eBay or PayPal checkout or invoice systems because of SPAM and false messages. You can either use the"PAY NOW" button at the end of the auction. Or send PayPal. IF YOU DON'T HAVE OR USE PAYPAL. CONTACT ME FOR PAYMENT METHODS TO PAY ON PICKUP. I try to ship most items within 48 hours of payment. I usually accept PayPal being shipped to confirmed addresses only. PAYPAL NOW REQUIRES A SIGNATURE UPON DELIVERY FOR ALL SHIPMENTS OVER $250. INTERNATIONAL BIDDERS: I accept all PayPal payments from International Bidders for amounts up to $250. For larger amounts. Email me. PayPal payments over $250. in value sent only by Express Mail with tracking, insurance, and delivery signature. SELLING INFORMATION: I try to inspect most of the equipment I list for auction. And to describe each completely& carefully. However, since some of the items can be over 60 years old, all items are sold"as is" Since I don't know the characteristics or condition of your equipment. No returns or adjustments on vacuum tubes. Almost every older electronic item will benefit from a careful alignment and cleaning or other restor
VINTAGE EARLY 60'S SUPERIOR INSTRUMENTS CO.TUBE TESTER.IN THE ORIGINAL WOODEN CASE.WITH SOME INSTRUCTIONS INCLUDED.THE UNIT HAS POWER WHEN PLUGGED IN,HOWEVER I DON'T KNOW TO TEST THE UNIT.CASE HAS SOME WEAR.MADE IN USA.VERY HARD TO FIND.ANY QUESTION EMAIL.GOOD LUCK.
For Your Consideration at Auction: a vintage and aged boxed tube tester instrument with operating instruction manual dated 1960. Instrument face reads"Model TW-11 Superior Instruments Co. Made in USA" Electrical instrument is as found at an estate sale- untested. We have plugged it in and inserted a tube- dial moved when levers were raised- but beyond that we have no idea what to look for- have no idea of its full working capability- therefore will be no guarantees on its work-ability- you are buying as is and considered untested- no refunds. Hard box(perhaps wood) is paper covered- has a removable lid cover. Box measures 10" x 14" x 4" high. Piece is aged- has been in storage for many years- again- no guarantees. If you have questions. Please ask before bidding Auctions& Shipping: We combine auctions& shipping ... moreon multiple winnings provided the items can be packed together compatibly. We prefer using USPriority for smaller. Lighter-in weight items and UPS for heavier items. USParcel Select is available, however, it is slower in delivery time, sometimes up to 2 weeks whereas USPriority is faster in delivery, usually 2-3 days. Sorry. We do not ship overseas, just within the USA, unless otherwise noted in our shipping information section- via the ebay Global Shipping Program. Payment: Please wait until we send you an invoice before making payment. We like to ship the least expensive. But safest means. Sometimes an item can be placed into a USPriority Flat Rate or Regional Flat Rate box- which may be less costlier to your zip. Payment, or contact regarding payment, must be made within 7 days of auction end or item will be relisted. We believe in saving our environment- we will reuse/recycle cardboard boxes and packing material at times- may not look pretty- but still very usable. Problem w/Purchase? Very rarely does an item arrive damaged in shipment as we take pride in our packing. But if such a problem arises. We must be notified within 5 days of package receipt so a timely claim ma
Vintage Superior Instruments Co SICo TW-11 Tube Tester- Tech Special. This unit is in good cosmetic condition but it will need work. Please see the pictures for the condition. Here is the manual online: Please look at the pictures& email any questions that you may have. If you need additional pictur es or some more information of any of these items please email me& I will be happy to help. These item(9 lbs) will ship via FedEx from U.S. zipcode 01440. Thank-you for looking and Happy Ebaying! ALL BUYERS If an item does not meet your expectations please contact me prior to leaving feedback so that I may address any issues that you may have. I make every effort to ship within 5 BUSINESS days of receiving payment. My shipping costs are based on the shipping weight of the item. Insurance and the cost of packaging. Please check the eBay ... moreshipping calculator for shipping costs BEFORE bidding and bid if you are comfortable with my shipping timeline and costs. Inside the US I use Fedex for items over 4 lbs and USPS priorty mail for items 4 lbs& under. All international shipments are by USPS Priority mail international. International bidders are responsible for all customs fees. Ebay is very strict on allowing sellers to remain with Ebay based on their feedback and detailed seller ratings numbers. I strive to have all my buyers 100% satisfied. If you have any questions or issues after receiving your item, PLEASE contact me prior to leaving feedback so that I may address them. As a seller, my policy is that I provide feedback after the buyer leaves feedback. If you have any questions not answered here, please contact me prior to bidding. I am a one person operation and will answer all inquiries in as timely a manner as I possibly can. Thanks again for looking at my item. Please note: I have been experiencing a sharp increase in non-paying bidders. Once an auction ends. Sellers have to pay auction fees based on the amount of the winning bid, REGARDLESS of whether or not the buyer follows through with payment. When
I AM SELLING A VINTAGE SUPERIOR INSTRUMENTS COMPANY TUBE TESTER MODEL TW-11 IN WOODEN CASE. NO TESTED, CASE SIZE APPROX 13 1/2 X 10 INCHES, THANKS FOR LOOKING.
1960 Operating Instruction for Model TW-11 Tube Tester SILCO Superior Instrument;1?RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Feog4d72f%2B%3E%3B1%3F-146a6bd0871-0x118-
ï» html_template Vintage Superior Instruments Sico Tube Tester Model TW-11 w/ Wear. Parts/Repair- Please click on the thumbnails for a larger version of the image. Description. Please read the description and view pictures of this auction carefully and thoroughly before making a purchase. We have described this item to the best of our knowledge including all the known and visible flaws. Please contact us with any questions in regards to this listing. Up for sale is a Vintage Superior Instruments Sico Tube Tester Model TW-11. This item is being sold in parts/repair. We received it in a case that was in extremely rough shape which we got rid of. The unit doesn't seem to power on. There are quite a few loose wires. The had collected a bit of dust and dirt which we were able to clean some of. It will require additional cleaning. ... moreWe do not guarantee anything to function with this item. Some of the switches are bent. And will need to be fixed. There are some tears in the chart from what we can see. Please refer to the pictures to see exactly what this item is and the condition that it comes in. Items in the pictures are the actual items you will receive. We do not use stock photos. Additional items and accessories are NOT included unless specifically stated within the listing or seen in the photos. If an item is not seen in any of the pictures. More than likely it is NOT included. If you are not satisfied with the item received for any reason. Please contact us via Ebay messaging system or at 571-292-5772 to resolve the issue. We offer 14 day return policy so rest assured that the problem will be solved! Shipping. The buyer is responsible for all shipping and handling fees and taxes. International buyers are responsible for all customs duties and taxes. If you are an international buyer it is likely that you will have to pay taxes when your item arrives. Please check your countries' taxes before placing an order.For a shipping quote please click on Ebay's"Shipping" tab. We combine shippi
shipping for US. is $20.00 international bidders pay actual shipping i take paypal only! i accept returns only if it is NOT LISTED AS IS i must be contacted within 14 days of arrival item must be returned to me. i will refund original purchase price& original shipping only so please ask any? before bidding. please bid only if you wiil complete transaction. i will give buyer 7 days to pay unless other arrangments are made. i have had some non paying bidders in past. be warned i will report you to ebay. thankyou for looking& good luck!
Tube tester for radio and TV. Found in closet. I do not know how to use or test. Seems in good working condition. Return if not satisfied. Buyer pays return postage. Test for shorts.Leakages, quality good or bad, test for noise. Has operating instruction booklet.
Excellent working condition. outside of box has some writing.inside looks new. cord has a 1 layer of electrical tape but there appears to be no damage underneath.
Untested. From a collectors estate sale. The meter moves to the enter when plugged in. Comes with everything you see. Wood case in real nice condition. See photos.
ALL MY ITEMS WITH A'MAKE OFFER' OPTION WILL BE GONE WITH THE FIRST REASONABLE OFFER! Please read complete listing. Payment is due within 48 hours after the listing ends. Thank you for looking. This sale is for an Vintage SUPERIOR INSTRUMENTS CO SICO TW-11 Tube Tester in Wood Box. Cosmetically. I would give it a 7 out of 10 with some imperfections here& there& a chip on the rear part of the wood top. Please see pictures. This is what you will be receiving. This is UNTESTED. As with all the items that I sell, this is sold as-is. Please check my feedback, and do check my other listings often, as I will be adding new items when I can. I try to describe and test basic functions of each item to the best of my abilities. And use only pictures of the actual item you will be receiving. Please take the time to view these pictures, as ... morewhat you see is what you get. Feel free to ask questions before making an offer or bid. Because most of my items are 10-50 year old electronics. I can't guarantee items will work or look 100% like new. This is why I list"as-is. Nevertheless, contact me immediately if you feel the item you recieve is not as stated in my listing. SHIPPING PRICE IS DETERMINED BY THE EBAY/UPS CALCULATOR ONCE I ENTER THE SIZE& WEIGHT. I DOUBLE BOX WHEN POSSIBLE AND SHIP IN A LARGER CARTON TO PROTECT ITEMS FROM DAMAGE(THIS ADDS TO THE SIZE AND WEIGHT WHICH INCREASES THE SHIPPING COST) I DON'T SEE WHAT YOUR COST IS UNTIL I SEND AN INVOICE. WITH THE TIME& MATERIALS INVOLVED. I DO NOT COME OUT AHEAD ON SHIPPING(PICK-UP IS ALWAYS PREFFERED) IF YOU FEEL THE SHIPPING IS HIGH, JUST OFFER A LITTLE LESS, SO THE TOTAL YOU WANT TO SPEND IS NOT EXCEEDED. PLEASE DO NOT LEAVE LOW STAR RATINGS FOR SHIPPING COST OR TIME; I TRY REAL HARD TO GET THE ITEM TO YOU IN THE SAME CONDITION AS YOU SEE IN THE PICTURES& ALSO INCLUDE INSURANCE. PLEASE CHECK MY FEEDBACK) I have no control over the package once it leaves here. So I will assist with any insurance claim due to loss or damage caused by the sh
Vintage SICO Model TW-11 Tube Tester Made by Superior Instruments Co. USA In Its Original Wood Case. Has been in storage the last 23 years. I only kept it as a backup for my TV-7U I have on my electronic repair bench. Shutting down, don't need it, make it yours. The left hand knob is not original. Domestic Shipping $23.00. Please ask all questions before bidding.
You are looking at a Vintage Superior Instruments Tube Tester Model TW-11 In"Briefcase" style case with briefcase style lock and handle The top(lid of the case) of the case can be removed Made in USA Approximately 14" X 10-1/2" X 3-9/16 Case shows signs of wear. See photos When plugged in the light lights but I do not have a tube for further testing. All of the knobs and dials move freely. Heavy item Sold as-is. As-shown Please look carefully at pictures to determine condition for yourself. Pictures are part of the description. Comes from a smoke free and pet free home. Please email any questions before bidding as all sales are final. I accept paypal. International buyers must use paypal. Item will be shipped within 3 days of the receipt of cleared payment. Thanks for looking!
Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Description: THIS IS A GREAT TUBE TESTER. SUPERIOR TW-11. THIS FUNCTIONS FINE. I HAVE NOT USED IT IN A WHILE AND I HAVE NO MORE TUBES. ALL FUNCTIONS WORK GREAT. WE PACK WITH EXTREME CARE AND CUSTOMER SATISFACTION IS ALWAYS MY FIRST PRIORITY. IF YOU SHOULD EVER HAVE ANY ISSUE WITH AN ITEM. PLEASE CONTACT ME PERSONALLY BEFORE LEAVING FEEDBACK OR OPENING A CASE. I WILL BE MORE THAN HAPPY TO WORK WITH YOU TOWARDS A RESOLUTION.BID WITH CONFIDENCE! PAYMENTS FOR WINNING ITEMS S/H MUST BE RECEIVED WITHIN 4 DAYS OF AUCTIONS END. OTHERWISE. EBAY WILL AUTOMATICALLY OPEN AN UNPAID ITEM CASE AND THE ITEM WILL BE RELISTED. Payment: NYS residents must add 8% sales tax. Or provide a copy of resale certificate. Payment must be received within 5 days of auction end or item will be re-listed ... moreand appropriate feedback left. 100% satisfaction guarantee: It is very simple. Before you contact ebay about a problem.CONTACT me first. We can settle this no problem! I NEED YOUR 5* STAR RATING. inkfrog terapeak. I000000.
Vintage 1958(Made in the USA. Tests for Quality of Emission 1. Test for Sorts& Leakages 2. Tests for Quality(Good? Bad) 3. Tests for Noise
Vintage Superior Tube Tester. Model# TW-11. Works great! Comes with instruction manual and 2 supplement tube test set up data manuals. Also has a built in roll chart for tube test set-up. Test sockets for: 4, 5, 6, 7 pin early type tubes, 8 pin octal and loctal tubes and 7, 9 pin miniature tubes. All switches, controls and sockets were cleaned, new roll chart window, some circuit parts replaced. Great for testing amplifier, audio, hi/fi, stereo, radio and tv tubes. Nice oak case. Shows a little age but is in overall very good condition. Very useful tester with a lot of excellent features and options.