Theodolite- is a precision instrument for measuring angles in the horizontal and vertical planes. Theodolites are used mainly for surveying applications, and have been adapted for specialized purposes

 

Lot of 8 optical pieces. These are vintage pieces and in good condition. I do not know how old they are. A few of them look like they have tarnished around the edges. I purchased these with the intent

 

1938 Treatment in General Practice by Harry Beckman MD , Publisher: W. B. Saunders Company, 787 pp. Worn and faded cover, faded spine, The back hinge is crack, pages Light soiling ,Page Edges toned wi

 

Ruler and case are in great shape, please see pictures for best description. If you have any problems or are unhappy after receiving your item, please contact me, I will do my best to make it right. I

 

17 scales 12" long. Cursor and center slide bar move smoothly. No writing on slide rule or case. Front Scale K, A [ B, ST, T, S, C ] D, DI Back Scale DF [ CF, CIF, CI, C ] D, DI, L

 

Vintage Keuffel & Esser Co. slide rule dated 1947. It comes in the original case and also includes the instruction manual dated 1936 Powered by eBay Turbo Lister The free listing tool. List your i

 

This is a super clean Post brand slide rule. It is a Hemmi Japan Versalog 1460 and is 12 1/2" long and the leather case is in great condition with very little wear and has the clip hanger. .

 

LUFFT ABBEON HYGROMETER BRASS TEMPERATURE INDICATOR Model HTAB169B Abbeon, CA. Inc 123 Gray Avenue Santa Barara, Calif. 93101 Made in West Germany Relative humidity usable in temperatures up to 230* B

 

Buff & Buff straight leg tripod60" high x 5" squareHardwood with cap

 

ANTIQUE T.R. JONES HARD BOILED LEATHER MINER'S HELMET T.R JONES CO. PAT. 4-15-24 COAL KING REG. TRADEMARK WILKES BARRE VERY NICE CONDITION! THIS WOULD MAKE AN EXCELLENT ADDITION TO YOUR COLLECTION Pow