What a rare and beautiful item. It has been estimated to be from the 1880-1900 ERA. I do not know that for positive, but the writing on the front of this item does show a lot of age. Actually the writ

 

A SUPERB ANTIQUE SOLID BRASS BULLS EYE FOR MICROSCOPE Approx 4.5 inches high Bulls Eye is 1.75 inches diameter No chips or cracks to lens An excellent Collector's Item

 

A WIMSHURST-TYPE ELECTROSTATIC INDUCTION MACHINE, GERMAN, CIRCA 1900 unsigned, with enamelled base plate, steel fittings, Leyden jars, contra-rotating Bakelite discs with brushes, moveable electric co

 

A History of the Medical Department of the United States Army, by Ashburn, published 1929 Boston, Houghton Mifflin, First Edition, near fine condition, clean, tight, and bright through out. No signatu

 

This auction is for a pair of brass wire rim eyeglasses that [I think] date to the mid 1800's. The lenses have light scratches, minor tarnish that is common with age and will need to be cleaned/polish

 

A wooden rotor variometer from the early 1900s and a pair of number 30 triode amplifiers from the 1920s on an oak base with solid brass corner posts and dense piano felt feet.

 

adjustable height angle and swiveled head, Brass, 9 3/4 in height, no damage, would need to be cleaned up, very decorativein excellent + condition

 

THIS IS AN EDWARDIAN CASED POCKET BAROMETER BY DIXEY 3 NEW BOND ST LONDON,THE DIAL IS MARKED DIXEY 3 NEW BOND ST LONDON ,IT MEASURES APROX 45MM,IT IS WORKING FINE, THERE IS SOME WEAR OTHERWISE OK.HAS

 

Online_Enterprises store Antique Picker Portable X-RAY machine TUBE head STEAMPUNK Display INDUSTRIAL

 

ORIGINAL VINTAGE ANTIQUE EYEGLASSES MAILING AND STORAGE CASE 1890'S ISSUED STAMPS AND IS GENEVA OPTICAL CO CHICAGO ILL