In 
 
Order by: 
Available to: 
Price: 
 - 
This site contains affiliate links for which I may be compensated
$
28.60
Buy It Now
Free Shipping
Condition: New
Location: Augusta, United States
This vintage concrete slide ruler is a handy tool for contractors and builders alike. With its 150 yard volume calculator, you can quickly and accurately ... morecalculate the amount of concrete needed for your project.
$
12.99
Buy It Now
$6.70 Shipping
Condition: Used
Location: Memphis, United States
Vintage Lot Of 4 Slide Chart Advertisers Metric Concrete Ventilator Deutz Diesal. The charts show wear and are the items you will receive.
$
10.50
Buy It Now
$6.05 Shipping
Condition: Used
Location: Seattle, United States
Vintage Concrete Volume Computer Slide Rule Ocean Construction Supplies (Now Cadman) Seattle Good condition. Refer to images.
$
16.99
Buy It Now
$5.25 Shipping
Condition: Used
Location: Wichita, United States
Vintage Mixed Concrete Volume Computer Made in the United States 1969 ADVERTISING ALLEN'S INC. & Ready-Mix #89 Concrete Volume Computer Made in Hong Kong ... more1970's ADVERTISING CORCRETE. Both Companies From Wichita Ks.
$
19.99
Buy It Now
Free Shipping
Condition: Used
Location: Farmer City, United States
Arthur, IL Concrete Calculator Slide Rule is in Great Condition. Arthur, IL Concrete Calculator Slide Rule in the photos above.
$
12.99
Buy It Now
$4.99 Shipping
Condition: New
Location: Meridian, United States
$
11.99
Buy It Now
$6.05 Shipping
Condition: Used
Location: Philadelphia, United States
Concrete Slide Ruler. Calculator Rule #89. USA Bill-Mar.
$
6.95
Buy It Now
$4.95 Shipping
Condition: Used
Location: Winder, United States
You are bidding on a Vtg General Portland Concrete Volume Computer Signal Mountain Chattanooga, TN. Item is is nice condition but there is a slight bend ... moretowards the middle. It is had to see in the pictures. Shipping will be 4.95. I only ship to the continental United States. 
$
19.91
Buy It Now
$4.80 Shipping
Condition: Used
Location: Cedar Lake, United States
2 Nice used Vintage slide ruler advertising Carlsen Concrete , Shumaker Bros Industries concrete volume calculators. These unique item is a must-have ... morefor collectors of vintage calculators and slide rulers. It features vintage advertising from a company that specializes in building materials and supplies. The slide ruler is designed to calculate concrete volume, making it a useful tool for contractors and builders. The vintage design and advertising make it a great addition to any collection or display. Don't miss out on the opportunity to own this one-of-a-kind item. CHECK OUT OUR OTHER ITEMS !
$
17.36
Buy It Now
$6.05 Shipping
Condition: Used
Location: Mansfield, United States
$
11.99
Buy It Now
$6.23 Shipping
Condition: Used
Location: Geneva, United States
$
13.65
Buy It Now
$4.50 Shipping
Condition: Used
Location: Clearwater, United States
Item is in good used condition with minor ware.
$
11.99
Buy It Now
$6.23 Shipping
Condition: Used
Location: Geneva, United States
Made in USA!
$
21.40
Buy It Now
$6.90 Shipping
Condition: Used
Location: Netcong, United States
Published by the Structural Materials Research Laboratory Second Printing July 1925. This does have a stamp on the cover Engineering Dept File. and instead ... moreto fully understand wha t you're getting before you buy it.
1
 In 

Former Listings  
 
VINTAGE REDI-MIX SUPPLY CONCRETE ESTIMATOR SLIDE RULE AND CALCULATOR
This is a vintage concrete estimator slide rule and calculator. It was made in USA. GUCO NO. 362. On the back, it says Redi-Mix Supply 889-6419, Ontario-Oregon. To me, it is in very good condition. It meas. 6-1/2 inches. Shipping charges are on line with the USPS. Parcel post delivery with delivery confirmation and insurance. Unfortunately, I cannot control the shipping costs. I do not charge sales tax, so on most purchases, that alone saves you the cost of shipping. I will ship everything via USPS as a rule. I cannot be held responsible for breakage during shipping. We are notorious for packing well. PLEASE DO NOT LEAVE NEGATIVE OR NEUTRAL FEEDBACK WITHOUT NOTIFYING ME OF THE ISSUE FIRST. I CANNOT RESOLVE SOMETHING IF YOU DO NOT COMMUNICATE WITH ME. I am always willing to work towards any resolution I will ship item no later than 1 day after ... morecleared payment. If you have any questions about merchandise or shipping costs, please Email me. Payment is expected within 7 days of auction's end. ATTENTION INTERNATIONAL BUYERS: First class mail international is the economy shipping price. It does not include insurance and lately. I have had very long shipping times. Just be aware that it may take as long as 3-4 weeks to receive your package. If you need something quickly, I would opt for the priority mail shipping time as that has a guaranteed shipping time of 7-10 days and does come with insurance. Of course, it is much more costly. I would be glad to combine shipments to save you money.
Vintage #89 Concrete Volume Calculator Bill-Mar Specialty Co. (LONESTAR) plastic
Vintage#89 Concrete Volume Calculator. BILL-MAR Specialty Co. Made in U.S.A. Has LONESTAR add on it. Made of plastic. In good condition.
VINTAGE CONCRETE CALCULATOR #24 COURTSEY OF "MONARCH CEMENT COMPANY" NEAT
I have a concrete calculator that is like a slide rule that measures 11 5/8" in length. It has 4 areas as follows: A-thickness-B-width or height-C-length-D cubic yards& inches in diameter, it is a number 24, there are instructions& examples on the back, it advertises the Monarch Cement Company and it is neat. Any questions; PLEASE ask. And& all inquires will be answered. REMEMBER I DO GIVE S&H DISCOUNTS FOR MULTIPLE LOT BUYS! THANKS for looking& bidding! PLEASE check my other listings!
Vintage Concrete Estimator Calculator Slide Rule 2 Versions Calif. Cement Ads
These 2 Concrete Quantity Calculators are described as follows: 1) Older of the two. Permanente Cement Co. Oakland, Calif. cream color. 2) Porterville Ready Mix, Porterville, Calif. White color. Both measure about 6 ½ x 1 ¼ inches. Company name on back, use instruction inside, in used but excellent condition, come in paper sleeve with instructions on back(both the same) Please review photos carefully for difference in printing/company name/style/condition. Note f rom seller: All items are from a smoke/animal free environment. Payment: Sign up for PayPal; the fast. Easy, and secure way to pay online. Payment is expected within 4 days. I only use PayPal as a payment choice. Returns: Returns are accepted within 14 days. Buyer pays return postage and there may be a restocking fee if the item is not returned in the same condition as ... moreit was sold. Returns are always accepted if the condition of the item is not the same as it was described in the sale posting. Shipping: I will ship within 24 hours of receipt of payment on normal business days using the U.S. Postal Service including automatic tracking. If you wish first class or priority services. Please let me know. I charge the“Shipping Wizard” calculated cost for your ZIP code. Handling fees are sometimes added for difficult/fragile items to mail. I will combine shipping on multiple items. Star Rating: My goal is to offer you quality customer service. I hope that I can provide the service that generates thoughtful and meaningful ratings from my buyers. Feedback: Feedback is very important to the EBay community. I will leave feedback on each buyer and I hope that each buyer will leave feedback on the service they received from me. If you have any problems with the item you purchased. Please contact me before leaving a negative feedback. Let’s work out the problem together. I want your buying experience to be a good one. Normal 0 false false false EN-US X-NONE X-NONE Normal 0 false false false EN-US X-NONE X-NONE
Vintage Concrete Chart - PreparationFundamentals1955 - Chevrolet Motor Division
Vintage Concrete Chart- 1955- Chevrolet Motor Division- General Motors Corp. 11 x 16 1/4 inches Very nice condition- Fundamentals in the preparation and use of concrete- Thanks for looking and e-mail any questions.RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk.rp*60c23f%60%3E-1403c568ea7-0xf3-
Vintage Slide Rule Concrete Calculator for The Lone Star Cement Corporation
Vintage Slide Rule Concrete Calculator for The Lone Star Cement Corporation Please See Pictures Will Combine Shipping_ Recent Estate Sale Find
Vintage Slide Rule Concrete Calculator T.L. Herbert & Sons Sangravl Co.
Vintage Slide Rule Concrete Calculator T.L. Herbert& Sons Sangravl Co. In very good. Clean condition. Printed on the back in addition to the instructions is the following: T.L. HERBERT& SONS- SANGRAVL CO. BUILDERS SUPPLIES- SAND- GRAVEL CONTINUOUS MIX CONCRETE Phone 6-4101 174 Third Avenue North NASHVILLE. TENNESSEE
VINTAGE 1930'S MEEKINS (FLORIDA) STEAM CURED CONCRETE BRICKS SALES BROCHURE
VINTAGE 1930'S MEEKINS STEAM CURED CONCRETE BRICKS SALES BROCHURE. 4 PAGES. WE THINK FROM THE 1930'S. ANY INFO ALWAYS APPRECIATED. ANY QUESTIONS PLEASE ASK? COOL NOSTALGIC PIECE. VERY GOOD CONDITION. GREAT REFERENCE. WE DO COMBINE SHIPPING. CHECK OUT OUR OTHER AUTO BOOKS AND COOL VINTAGE STUFF! CHECK OUT OUR OTHER COOL SITES baseballandchevys02 and mr.licenseplate
VINTAGE 1952 Portland Cement Assn. Building Concrete Farm Structures Manual
VINTAGE 1952 Portland Cement Assn. Building Concrete Farm Structures MANUAL TYPE BROCHURE. 36 PAGES. COPYRIGHT 1952. ANY INFO ALWAYS APPRECIATED. ANY QUESTIONS PLEASE ASK? COOL NOSTALGIC PIECE. VERY GOOD CONDITION. GREAT REFERENCE. WE DO COMBINE SHIPPING. CHECK OUT OUR OTHER AUTO BOOKS AND COOL VINTAGE STUFF! CHECK OUT OUR OTHER COOL SITES baseballandchevys02 and mr.licenseplate
VINTAGE CONCRETE ESTIMATOR BOISE-PAYETTE LUMBER CO. USA ~RULE~RULER~CALCULATOR~
What we have here is a Concrete Estimator. Boise-Payette Lumber Co. Made in the USA. This is in great condition. We use our pictures as part of our description. So please enlarge and email us with any questions. Thanks and happy eBaying!
Vintage Eau Claire, WI Slide Rule Type Concrete Calculator
You are bidding on a Concrete Quality Calculator compliments of Miller. Bradford, and Risberg Co. Eau Claire, Wi Resembles a slide rule Measure 8" long x 1 3/8" wide ITEM SOLD AS IS!
vintage Kuhlman Corp Toledo Ohio Concrete Calculator slide rule 8" long
dirt. Scratches and marks.grading good. INTERNATIONAL SALES: except Canada) require a $14 registered mail charge added to regular shipping charges.EBAY REQUIRES TRACKING SO NO EXCEPTIONS! All international sales ask for quote BEFORE BIDDING.I DO NOT set shipping prices as all items must have tracking and USPS prices have about doubled since beginning of year and ebay charges 10% on shippping costs in USA too. USA SALES: Free shipping,ONLY when listed for free shipping,applies to 48 continental United States only,ask for quote if anywhere else ALL SALES: All items will be shipped out promptly(within the day Monday through Friday,not including holidays) and with care.All questions will be answered ASAP.I ship USPS only. All items must be paid in the first 2 days or unpaid item procedures wil be followed.A BID EQUALS A COMMITMENT AND CONTRACT.Vintage ... moreelectronics or mechanical items have no guarantee on how long they will work as they should be cleaned and lubed,checked by a professional. I am not responsible for postal damage or loss,insurance may be available upon request,if there is damage open it in front of the postal employees and report the damage to them or refuse the package, so no refunds for this.If a return is authorized by me or other means you must ship the item back in original packing at your cost. Grading of item"New" is unused, Mint" maybe used once but like new, Excellent" has some minor use but great shape,Fine is in normal used shape,no damage to speak of other than regular useage wear, Very good" has some lite dirt,lite wear,maybe a crease or two. Good" has normal useage wear with some dirt,possible creasing and maybe writing but quite readable and a chip depending on item. Fair" Has dirt,a lot of wear,creasing,chips,missing parts, and will need restoration. poor" has major wear and pages loose,dirty,missing,missing pieces and sold for rarity or for parts.Untested" means untested,sold for parts or repair but may work. By buying this item you agree to
Vintage Concrete Calculator, Concrete Volume Computer, Brick Wall Calculator
Concrete Calculator. Concrete Volume Computer, Brick Wall Calculator All three included in this vintage lot. With advertising printed on each Thanks for looking& Good Luck Bidding!
VINTAGE 1959 MANUFACTURE OF CONCRETE MASONRY UNITS BOOK GUIDE - CEMENT
FOR YOUR CONSIDERATION- VINTAGE MANUFACTURE OF CONCRETE MASONRY UNITS by WILLIAM GRANT. COPYRIGHT 1958- SECOND EDITION. THIS SOFTBACK BOOK IS 261 PAGES LONG AND LOADED WITH INFORMATION. THE BOOK IS DIRTY IN SOME AREAS AND SOME BENT PAGES- SOME UNDERLINING THROUGHOUT. WINNING BIDDER PAYS $2.50 SHIPPING IN THE U.S.A. EXCLUDING ALASKA& HAWAII. Check out my! Be sure to add me to your!
VINTAGE SLIDE CONCRETE VOLUME CALCULATOR ~DAVISON SAND GRAVEL NEW KENSINGTON PA
Vintage Calculator Rare Vintage Advertising Concrete Volume Calculator Slide Chart measures approximately 1-3/8" x 6-7/8" The scales on the Calculator include Thickness. Width or Height, Length and Cubic Yards. Sliding the rule left or right permits concrete volume calculations. The back of the Calculator features the following advertisement: DAVISON SAND& GRAVEL COMPANY Sand• Gravel• Ready Mixed Concrete Phone: 362-4900 Davison Sand& Gravel Company was located in New Kensington. Pennsylvania. The Vintage Concrete Volume Calculator is printed on glossy plastic stock. And remains in Very Good Condition. Perfect to add to any Vintage Advertising; Advertisements; Graphs; Charts; Calculators; Slide Rules; Davison Sand& Gravel; Concrete; Cement; Construction; Mathematics; Science; Paper& Ephemera; tc. collection! ~ Very ... moreLow Starting Price& No Reserve! ~ Payment must be made within 7 days. The following payment methods are accepted: PayPal. Other payment methods available. International bidders use PayPal only; please contact us for International shipping costs. All items sold as is. All uninsured or unconfirmed shipments are the responsibility of the winning bidder. If item is insured. Regardless of fault, buyer agrees to abide by the terms of the insurer for reimbursement. Thank you! Shipping and handling can be combined when possible to save $$$ on multiple purchases. Please Note: Sale is Final. This is a true auction with no set reserve price. All items sold"as is as found" It is the bidder's responsibility to ask questions prior to bidding. We strive to describe items honestly and to the best of our ability. However. Most items have been purchased at estate sales, auctions, antique stores, tc. and have been previously owned, used and/or handled. Thus, we may inadvertently miss a detail important to you. Please email questions/concerns prior to bidding. Please check out our other items and be sure to add us to your favorites list! Thank you! g6.RcmdId ViewItemDescV4,RlogI
VINTAGE SLIDE CONCRETE VOLUME CALCULATOR ~WALTERS SAND CO. MANHATTAN, KANSAS
Rare Vintage Advertising Concrete Volume Calculator Slide Chart measures approximately 1-3/8" x 6-7/8" The scales on the Calculator include Thickness. Width or Height, Length and Cubic Yards. Sliding the rule left or right permits concrete volume calculations. ADVERTISING ON BANK FROM: WALTERS SAND COMPANY. MANHATTAN, KANSAS RULER MADE FROM HEAVY DUTY FIBERGLASS/PLASTIC? IN BLACK LEATHER CASE- VINTAGE BOTH CAME FROM AN ESTATE OF 98 YEAR OLD FARMER
VINTAGE CONCRETE ESTIMATOR VOLUME CALCULATOR SLIDE RULE MADE IN USA!!!
YOU ARE PURCHASING ONE CONCRETE VOLUME ESTIMATOR CALCULATOR SLIDE RULE. PATENT NO. 2073421 LONE STAR CEMENT CORPORATION. MEASUREMENT: 8"inches long. 1 1/2"inches wide. IN GREAT CONDITION!
1950's VINTAGE CONCRETE POCKET CALCULATOR PLASTIC RULER BLAKE BROS. RICHMOND CAL
1950's CONCRETE CALCULATOR POCKET RULER This hard white plastic ruler is 6-3/8 x 1-1/8 inches in size. It has two pieces that slide back& forth for the calculations. The phone# on the backside looks like from the 1950's. This item weighs 1 ounce unpacked. This item is in gently used clean condition with scratches, rubbings, stains& some color loss. Stored in a loving smoke free home. Please be sure to check out my other items! Be sure to add me to your! We will always combine shipping on all items won by the same bidder on the same date& reduce the shipping fee!
VINTAGE SLIDE/SLIP CHART VOLUME CALCULATOR ~Central Pre-Mix Concrete Co. USA
Nice old concrete volume slip chart/calculator. see the pictures) Need more pictures or information? Please let me know! All items shipped within 24 business hours of receipt of payment. Glad to combine shipping for items purchased within a few days of each other(before bidding contact me for details- on free shipping items I make a refund for the amount saved by shipping combined items) Good luck bidding and thanks for looking! Sorry- No shipping outside the USA.
(2) VINTAGE SLIDE CONCRETE VOLUME CALCULATOR ~KERSHAW SAND CO. MANHATTAN, KANSAS
2) VINTAGE SLIDE CONCRETE VOLUME CALCULATOR ~KERSHAW SAND CO. MANHATTAN. KANSAS(2) VINTAGE SLIDE CONCRETE VOLUME CALCULATOR ~KERSHAW SAND CO. MANHATTAN. KANSAS IN ORIGINAL CASES I DO COMBINE SHIPPING ON MULTIPLE ORDERS IN THE SAME WEEK SO PLEASE WAIT FOR AN INVOICE BEFORE PAYING. I ask that you please view the pictures carefully before you bid. As they are true-to-life, actual pictures of this item, and are a part of the auction description. When you click a picture once. It will enlarge. Click on the picture again, and you can see much greater detail. DISCLAIMER: I find antique and collectible items at Estate sales and Auctions As well as sell on Consignment for quite a few antique dealers. So the majority of the items that I sell are Vintage or used and may show signs of normal wear and age. Items are sold in the same condition that I find ... moreor receive them which may mean that they are dusty and dirty from years of storage. I do my best to honestly describe everything as I see it, disclosing any damage or imperfections that I see. I am not an expert. Please look carefully at my photos and read the description judge accordingly. If you see an please let me know. Feel free to contact me with any questions or comments you may have. ONLY PAYPAL IS ACCEPTED AS PAYMENT. BUYER IS TO PAY FOR ITEM(S) WITHIN 3 DAYS OF THE AUCTION ENDING. PLEASE WAIT FOR A FINAL INVOICE AS ACTUAL SHIPPING MAY VARY DEPENDING ON LOCATION. WE TRY TO ESTIMATE THE AVERAGE SHIPPING COST. AFTER FINAL CLOSURE OF THE AUCTION WE WILL ADJUST THE SHIPPING COST UP OR DOWN AS NEEDED TO REFLECT ACTUAL CHARGES. WE ARE ADDING INSURANCE TO ANY AUCTIONS THAT ARE $50 U.S. FUNDS OR MORE. WE ALSO ASK THAT YOU PLEASE WAIT FOR YOUR FINAL INVOICE FROM US WITH THE INSURANCE ADDED& THE ADJUSTED S/H FEES FOR ADDITIONAL AUCTIONS WON. IF YOU PAY BEFORE THE ADJUSTMENT TO INSURANCE HAS BEEN SENT ON THE NEW INVOICE. YOU WILL HAVE TO PAY THE DIFFERENCE FROM THE 2 INVOICES BEFORE WE WILL SHIP YOUR ITEM TO YOU. ALL SHIPMENTS OVER $50 US FUNDS REQUIRE USPS INSUR
Vintage Advertising Concrete Calculator Worcester Ma. Kesseli & Morse Co.
This is a Kesseli& Morse concrete calculator in nice condition with Worcester Ma. advertising and old telephone. No flaws to note! It is 6" long when center is not pulled out. All looks good and clear! Thank u for looking!
VINTAGE CONCRETE CALCULATOR NO. 24 SLIDE RULER 500 CUBIC YARDS
VINTAGE CONCRETE CALCULATOR NO. 24 SLIDE RULER 500 CUBIC YARDS From my father's workbench. CONCRETE CALCULATOR NO. 24 Center Section Slide Ruler in original white plastic protective sleeve. A) Thickness(1" up to 40 feet) B) Width or Height(8" up to 200 feet) C) Length(0 up to 500 feet) D) Cubic Yards(1 up to 500) plus Diameter in Inches(0 up to 120" ~ ~ ~ INSTRUCTIONS ON BACK ~ ~ ~ Condition: Gently Used. Slide moves freely. Thank You for Looking! PAYPAL ONLY. BUY IT NOW payment due AT TIME OF PURCHASE. AUCTION payment due within 3 calendar days. I DO report non-paying bidders& bid retraction requests to Ebay. Many thanks! I'm happy to combine multiple items and only charge actual shipping cost by weight of combined items. I usually ship same day or next morning. But on rare occasions will ship up to 24 hours of ... morereceiving payment. ALL SALES ARE FINAL. Unless item received was not as described. We have a smoke free/pet free home. I sell mostly used and vintage items and do my best to describe the item's condition and any flaws with photos and written descriptions. I DO report non-paying bidders and bid retraction requests to Ebay. Please feel free to email any questions BEFORE BIDDING. I always leave feedback after you've left some for me indicating you've received the item and you're satisfied. On Jan-18-15 at 20:50:13 PST. Seller added the following information: Use the FREE Counters 1 million sellers do- Vendio!
Vintage Concrete Quantity Calculator - Near Mint w/sleeve - Volume & Block Walls
This near-mint vintage pocket concrete calculator has advertising for Transit Mix Concrete Company in Colorado. Glossy plastic finish kept this one clean. Calculates concrete volume and concrete block wall estimates with provisions for openings. Please consult photos to determine if the condition meets your requirements. Ships next day from our pet-free. Smoke-free home.
vintage concrete volume computer ruler scranton,pa
two ruler from scranton.Pa
Hornell NY Vintage Bituminous Concrete Calculator A. L. Blades & sons
Hornell NY Vintage Bituminous Concrete Calculator A. L. Blades& sons g.RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk%601d72f%2Bjw%60hquvg%3Eg-14b8a72f769-0x10e-
Vintage Concrete Calculator Slide Signal Mountain Cement
As pictured. Slide portion moves. Although the fit is very tight. Payment via PayPal only. PayPal accepts credit card and debit card payments. FREE Shipping within USA via trackable USPS Priority Mail.
Vintage Concrete Quality Calculator Kurtz Bros Ephrata PA - Tool, Advertising
Up for bid is a vintage Concrete Quality Calculator. Tool. Advertising. Kurtz Bros. Concrete. Inc. Ephrata. Pennsylvania. 5 Digit Phone Number. Sleeve shows age and wear. Calculator is in good condition. Our Commitment: We promise to be honest in describing our items accurately. Most of our items are vintage and will show age and patina. Please read descriptions carefully. We do our best to research our items and list honestly. It is the buyer's responsibility to make the determination on the item by referring to the photos and description. Please ask questions before bidding or purchasing*If you are not satisfied with your purchase. Please give us the opportunity to resolve the problem before leaving negative/neutral feedback. We offer a 14 day refund if we cannot resolve issues. We offer hassle-free returns through Ebay. Payment*We ... moreask that payment be made at time of purchase for Buy It Now items; For auction listings. Within 3 days. International Bidders: Only accept PayPal as payment Shipping*We do combine shipping when can be done safely. We always try to ship the most economical way. We ship within 1 business day. Good Luck! Come back to visit our store as we list new items often
Vintage Concrete Quantity Calculator JJ Columbia CT Lonergan Willimantic Conn
5 JJ Lonergan Inc. Unused Billing Statements& Concrete Calculator with Sleeve. The good old days of Willimantic. 1.RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk.rp73%28b0g%60%60%3E1-14bde90a06e-0x109-
Concrete Volume Calculator, Vintage, Cubic Yards. Mesa/Phoenix. W/Case.
The item listed is a vintage Concrete Volume Calculator. It is probably from the'60s or'70s but is in great shape and works fine. It quickly figures the cubic yards you will need for a slab and it will even calculate the cu y. needed for a cylinder. Pretty slick! This would be great for small contractor/handyman or homeowner who occasionally needs to figure the amount of concrete needed for a job. I'm sure that the"big guys" have sophisticated electronic computers or apps. for this. It comes with a vinyl case. Please look the pictures over carefully and ask any questions you might have before bidding. I only sell to buyers within the United States and only accept payment via Paypal. Good luck bidding!