Vintage Brass Microscope, marked 100x, no name---There is a patina/metal discoloration which I tried to picture. Used a magnet to test the metal; still not sure what metal is used to case the mirror.

 

Sargent Welch is a a major seller of Scientific (Instruments, Apparatus, furniture, Vacuum punps, chemicals, supplies for Industrial, Collegiate, Government and Research Laboratories - this is a Catal

 

i000000 Vintage Steel Mounted 4" Glass Projector Magnifying Lens Optical Photographic Click Images to Enlarge You are bidding on a very nice example of a vintage Boxed Large Steel Mounted 4" 105mm dia

 

Offered here is an anemometer with the original leather case. Anemometer marked as being manufactured by Taylor - National Mine Service company. Measures 4.25" diameter. In working condition. A strip

 

Sorry no returns, but free shipping inside the US. Used and including brown leather case. Over all well kept and working while listing. Case has some soft areas and discolor. 5.12 inches by 1, lens ar

 

This is a vintage, used, Minerva measuring tool in its original box. It is stamped that it is Swiss made.  It measures approximately 4 inches in length and 1.5 inches in diameter.  If you have any q

 

This excellent set of dental instruments were made mainly by O.Suter Dental Manufacturing Company . They are contained in a felt holder which neatly rolls up. There are 17 instruments of which 10 are

 

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

 

FROM A LOCAL ESTATE. 6 1/2" ACROSS. EXCELLENT WORKING CONDITION. THERE IS NO NAME ON IT. NO RESERVE.

 

For sale is this vintage 1950's Pickett & Eckel, Inc. 12" Slide Rule - Model 800-ES - Includes leather case and handbook - Says "Chicago" on the slide rule - The date on the handbook's inside fron