Auction: Clocks, Watches & Scientific Instruments - 2355Location: BostonDate / Time: March 24, 2007 10:00AM
Description:
Binary Slide Rule and Other Calculating Instruments, by Tavella Sales Co., New York, copyright 1931 and 1940, the 8 1/2-inch dia. metal disc with perspex index arm, in original leather wallet with instruction booklet; an early mahogany gauge stamped IIM; a hinged boxwood square stamped T. & J. Taylor, Oldham; and an Addometer.
Estimate $300-400