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

 

OLD PHARMACY LABELS. This is a LOT of OVER 100 PHARMACY LABELS . They are dated from 1914 to the 1970'S. They are all in NEW condition. Great collector lot!!! LOW,LOW STARTING PRICE!!!! NO RESERVE!!!

 

Antique prepared microscope slide of Diatomaceae- Stephanodiscus Niagara mounted in water. Slide is undated, except to say "March". Slide is labeled "duplicate" and prepared by J.D. Cox Jr. procured f

 

You are bidding on 1 Antique Gebirg's Glas Modell 1479 Binoculars. I believe these to be from the early 1800's to early 1900's. I have tried researching them, and found very little. Gebirgs means Moun

 

VINTAGE 1917 JULIUS KING OPTICAL SAFETY GOOGLES EYEGLASSES & MASKS CATALOG FULLY ILLUSTRATED. 26 PAGES.MEASURES 6" X 9".. Please see pictures.. . ALL ITEMS ON MY SITE ARE GUARANTEE TO BE 100% VINT

 

VINTAGE CERAMIC/PORCELAIN TEMP GAUGEWORKING 35 CM TALL 8 CM WIDEPLEASE CHECK PICTURES CAREFULLYMISSING ONE BRACKET ON BACK

 

BIFOCAL PINCE NEZ EYEGLASSES GOLD RIMS OR GOLD FILLED I CAN FIND NO MARKINGS BIFOCALS ARE RARE CASE IS IN VERY GOOD SHAPE BUT NOT PERFECT HINGE IS STRONG. EYEGLASSES DON'T SEEM TO HAVE A FAULT. NOTE T

 

Broken handle. Good thread. We put a picture handle (probably from tortoiseshell) just to see what it was. We send it free if the customer really wants, but the broken and damaged as the picture we do

 

Vintage Brass Mounted Thermometer The thermometer has been used, the brass patina has rubbed in places and it could do with a polish. The thermometer is complete with wall bracket. A nice old thermome

 

Antique medical hammer, the lead filled nickel plated brass hammer has a nice ebony handle, made c.1880-1900. Good used condition with signs of use and age, see the photos. Length: c. 17cm Shipping wo