A Collection of Circular Slide Rules and Calculators. See photos for what is included. All are in very good condition except the Range Computer which has 3 internal cracks in the back plastic disk. So

 

German vintage barometer with thermometer and hygrometer in wooden case.Working condition , wood scratches partially.

 

If you collect or restore old radios, crystal sets, early scientific apparatus, vintage test equipment, military surplus, or other unique old technical items, keep me on your favorite seller list. I a

 

bottom 2 have chips and cracks on straight edge and can be used for scales. . Top one much better condition but keep it a deal 4/66 in a firstclass mail envelope _gsrx_vers_335 (GS 5.5 (335))

 

This pair have been well used and abused over time...Nothing seems froze up but there dents here and there and missing parts...Pictures I am sure are clear on condition...Thanks....

 

Kueffel and Esser Co. Alidade Model T-211618 In Original Case Crystal Clear Optics in a carefully owned and used instrument From the dry, high desert climate of Colorado It is rare indeed to find deca

 

I smashed my thumb too many times to count! Ever had a small ore sample you tried to breakup with your hammer on the trailer hitch of your truck or on another larger rock and hit your self or had flyi

 

bunnybeare store ANTIQUE 1908 EDWARDIAN 8 PIECE DRAUGHTSMENS TECHNICAL DRAWING WOODEN CASED SET ANTIQUE EDWARDIAN 8 PIECE DRAUGHTSMENS WOODEN CASED SETWritten in ink on the base: Lilly - from Auntie A

 

Early Low Vein MSA Comfo-Cap with nice Tiger Striping and original liner/lacing. You can see where the MSA sticker that told the size was on the underside of the helmet, but it's no longer there. So t

 

WE HAVE MORE PHOTOGRAPHS BELOW ITEM DESCRIPTION A vintage English Brass cased pocket or fob navigational compass, the case in the form of a pocket watch; having side sliding dial lock & in fully f