This is a small vial with antique radium gauge parts inside it. Unlike other rad tester items, it is very small, and fully sealed (potted with epoxy) so the radium will not get out. It is strong enoug

 

History of science. This is a shanked microtome knifes with a rectangular blade and handle. Date ca 1880-1890. The knifes is stored in a flat black leather case lined in maroon velvet and red silk. .

 

Great Antique 1930's or 40's Era GOLD Filled Round Wire GlassesMarked inside the bridge 1/10 12 K GF Ful-Vue. Which means the frame is 12k Gold Filled The frame has a ribbon like pattern that complete

 

Hi,i have for sale a brass bodied Absolute pressure gauge that is connected in tandem with a mounted and graduated glass tube.I am not 100% sure what this fella does but the gauge reads up to 50 PSI.T

 

Chelsea Ship's Strike Barometer nice condition will look good alone or with a matching clock subhunter Store On Mar-27-13 at 06:54:43 PDT, seller added the following information: Barometer reading doe

 

E. Leitz Wetzlar Microscope Attachment Part Unknown Made In Germany Part # 10070 Lenses reads Ernst Leitz Wetzlar Germany 6.5 What you see in the photos is what you will be receiving. Great Collectibl

 

American Optical Optometry Ophthalmology Giantscope Electra II Case Mod 12014  Does not light. Power supply OK. Sold for parts or repair. See photos for details and feel free to ask me any questions

 

Two beautiful Dietzgen drawing instrument sets, complete both sets as new, a #N1037 Champion & a Special 1213P Master-Pro stamped Oregon State Special. In original boxes with paper work.Postage ca

 

GERMAN WWII NAVAL U-BOAT MHR1 HOHENRECHENSCHIEBER SLIDE RULE c1940's $1 NO RES A scarce German WWII period Kriegsmarine / naval 'Hohenrechenschieber MHR1', (or height slide rule). Issued for use on U

 

Model marked made in Germany. Instructions in German. Plastic duplex cursor with 5 hair lines and German markings for Horse power,Photos are of rule which is being sold..Rule dated Jan 1973. Has scale