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1 | K2 HORSE RACING Calculator 1972 RARE VINTAGE K2 HORSE RACING calculator - includes booklet, round slide rule and case. This plastic circular slide rule has a white base, with three concentric logarithmic scales, all numbered from 1 to 50 | | $24.49 |
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1 | 12 Inch Charrette Drafting Machine Ruler; Half Size - 10, Full Size - 50 12 Inch Charrette Machine Ruler; Half Size - 10, Full Size - 50 | | $8.99 |
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6 | Antique Weston Electrical Volt Meter - Newark, NJ - Large Gauge - Model 57 It is a large Weston Electric Voltmeter. The face of the meter is 8 5/8" in diameter. The back plate is 9 5/8" in diameter. It is 4 1/2" deep. The posts on the back stick out an additional 2 1/4" maki | | $63.00 |
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3 | Rare Vintage Bates Saccharometer Hydrometer Brewing A saccharometer was an instrument designed to calculate the suger content and thereby the potential alcohol of wine or beer. This value was essential when calculating the amount of duty. In early year | | $49.31 |
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1 | Six Antique Concave Brass Grain Weights A tin box containing 6 old grain weights, 6, 5, 4, 3, 1, 1. In concave design, most original gilding intact, no maker's or other marks. Probably mid 19th century.I am later advised that they are proba | | $22.68 |
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1 | Vintage Frederick Post Co. 1447 Bamboo Slide Rule Ruler with Case. nice vintage ruler. no cracks on it and nothing peeling off. very good condition. comes with the case too. slides perfectly too. CHECK MY OTHER AUCTIONS FOR OTHER RARE ITEMS. PAYMENT DUE WITHING 3 DAYS OF | | $9.00 |
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3 | ACU-MATH Model SR 1311W 10-Inch Slide Rule, Leather Holster, Box, Instructions The Winning Bidder gets this U.S. GOVERNMENT-ISSUED ACU-MATH Model SR 1311W Log Log Decimal Trigonometry 10-Inch Slide Rule, Faux Leather Holster, Original Box, and Instruction Booklet. This Slide | | $31.20 |
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2 | 3 vintage slide rule, exc. cond., w/ cases , K & E, Acumat, Warner & Swasy Co. 3 vintage slide rules: 1. The Warner & Swasey Co., Cleveland Ohio. 2. Acumat Acu Math no. 600. 3. K +E #681210 Log.Log Duplex Decitrig c. 1947 by Keuffel & Esser Co. Winning USA bidder pays pr | | $12.00 |
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6 | Vintage Gerber TP007100B Scientific & Pickett N4-ES vector type slide rule The Gerber is still in the wrapper and presumed new The Pickett is in a lovely creamy leather case and is in excellent condition Get your bids on for these pre computer geek tools. | | $162.50 |
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2 | Thiourea 99% Lab Chemical One Pound Thiourea is also known as thiocarbamide. White, lustrous crystals with a density of 1.4 and a melting point of 180 degrees Celsius. Soluble in cold water. It's uses include - photography (removing sta | | $12.49 |
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