This is a Crookes tube with multiple electrodes. The gas pressure is lower than most Crookes tubes, correct to allow electron emission in a straight line from the cathode disk while having enough air

 

ITEM DESCRIPTION: THIS IS A UNIQUE DOUBLE STEAM ENGINE WORK STATION MOUNTED ON AN ANTIQUE 1800'S TRICYCLE! I BELIEVE THIS WAS ACTUALLY IN USE & NOT A TOY. THE BIGGER ENGINE WORKS, BUT THE SMALLER

 

c.19th Smith&Beck microscope objective lens Old Smith&Beck microscope objective damaged. Optically and cosmetically, it has severe damages but can be useful to plug a hole P&P Europe: 3.5

 

Vintage travelers jewelry scale. Comes from smoke free home. Being sold as is. On chain is broken. Other than that I don't know anything about this piece. Thanks for looking and thanks for bidding. Po

 

Antique English Wall Barometer Does wrong properly needs adjustment. Missing a small screw on rim plate. Overall good condition.

 

Here is an authentic Chamberlain's tablets glass Apothecary jar / Pharmacy Display Jar. Available in the early 1900, these tablets were recommended for biliousness, headache, and indigestion caused by

 

This is a lot of 40 Vintage - Antique Medical Items. This is the last batch I have doing the hole lot of 40 items.Medical instruments some may be related to the following Surgeon Surgery Surgical Doct

 

50+ Items Each Week ~ All Items Start at $0.99 NEVER A RESERVE! ~ Up For Bid: ~ ~ * ~ Unusual & Seldom Seen 1902 Patented Hygrometer Antique Brass Lloyd's Hygrodeik Instrument This is a Great look

 

Presented for auction today is a nice set of 4 Apothecary Bottles in perfect condition. The wavy glass is so beautiful, and the stoppers are ground glass. NICE! Please see all pictures and ask any que

 

VERY EARLY OIL LAMP MARKED J ANTON AND SON MONONGAHELA PA WITH A U S EAGLE TRADEMARK AND A PATENT DATE OF MAR 29 1904 GREAT ADDITION TO ANY MINING COLLECTION .ITS BRASS AND IN GOOD SHAPE FOR ITS AGE