Vintage Keuffel & Esser Co. slide rule. Case and ruler show slight wear from use and age. There is a name written just on the inside flap of the case as shown in the pictures.

 

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

 

You are bidding on 17 Safe Worker Stickers 1 year to 17 years fom Amax Lead Company of MO.. These were given out for each year that you worked safe with no lost time Injurys for Amax Lead Company.$2.7

 

Bausch & Lomb Optical Co. Rochester NY USA engraved on rim of this antique desk top map magnifying lens. Adjusts up and down to focus. Excellent condition. Lens is free of scratches and chips but

 

Vintage Kaleidoscope works great. Very rare!!!! Posted with eBay Mobile

 

This is a vintage Welch Allyn Opthalmoscope Otoscope set in a bakelite case. It comes with everything you see in the pictures. It has general wear to the set. It is being sold as is, untested. *****We

 

"Marble Scope" is a wonderful handheld marble kaleidoscope by Sherry Moser. This scope has a 21.85mm removable marble as the object. Any marble of this size could also be used in this scope as the obj

 

Hello ebayers, For sale is my original classic Tasco 1959 10TE Solarama long-focus refractor made by Royal Optical Co. of Japan. This beautiful classic scope is a 1200mm FL at f16 and 76.2mm dia. The

 

Vintage COAL MINING MINERS SAFETY LAMP KOEHLER NO. 203 PERMISSIBLE ROY GOSSET This is a vintage KOEHLER PERMISSIBLE SAFETY MINING LAMP NO. 209. It has the tag of the person ROY GOSSET attached to the

 

Early Apothecary Glass Medicine Bottle4 inch clear glass advertising bottle for Hurds Reliable Drug Store 438 Main Street Wakefield MassFront side of bottle in embossed with raised lettering and measu