This is a very old mathematical engineering instrument used for compensating polar planimeters, radial planimeters, square root planimeters, mechanical integrators, and suspended pantographs. It would

 

These are very old and very neat antique glasses and they even have a simple adjust loop for adjusting them. They are marked Geo Griffin on the side and these are a great and hard to find example of e

 

Antique Trade Atlas Mark Drawing Instruments EG Soltmann Fulton St Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlar

 

ESTATE FINDVINTAGE TONSIL REMOVAL TOOL ?We were unable to find any identifying markings on this old tool, other than what appears to be initials Please view photos It is likely you know more about thi

 

I have for auction these three vintage Welch scientific laboratory jars. They are as found and untouched/un cleaned. Each bottle has a label that says; Welch a sign of quality and a mark of service. W

 

The "Gem" Adding Machine "Pocket" calculator by the "Automatic Adding Machine Mfrs" of NewYork, the "Gem Adding Machine". The device measures 4" x 3" and is in mint condition; I note only that the fir

 

This auction is for an outstanding Partola laxative tin with contents still wrapped. Circa 1919. Tin is not mint. Definite signs of wear and scuffs. Still, for age, the tin will display well, especial

 

This is a fine vintage 1926 explosives box. It is Burton Explosives and Chemicals out of Cleveland Ohio. It is the company that was taken over by American Cyanamid and Chemicals Corp. in the 1930's. I

 

This an antique spectroscope/spectrometer by William Gaertner of Chicago, from the early 20th century. It is of black enameled brass with enclosed scale with vernier, telescope with draw tube focusing

 

YOU ARE BIDDING ON AN 1880'S ERA ANTIQUE PAIR OF MOTHER OF PEARL AND BRASS OPERA GLASSES, MADE BY CHEVALIER, PARIS, IN EXCELLENT WORKING CONDITION. THESE OPERA GLASSES MEASURE APPROX. 3 3/4" INCHES WI