Here is a blank make your own slide rule kit from Dyna-Slide. There is a no 21 blank with a sealed envelope that I assume holds the hardware and an instruction book. Not a common rule to find, get one

 

58 Prepared Microscope Slides 3 Boxes Compass Brand w/34 slides of Micro Organisms, Vegetables & Pollens & Spores; 1 Box of 12 ATCO slides # 1383 "Textile Fabrics" and 1 box of 12 slides each

 

bassandtreble Store VINTAGE CHARVOS DRAFTING NAVIGATOR'S CASE U.S. NAVY SET GREAT ITEM IN CASE WOW!! Thanks for taking the time to view our item. You are looking at a very clean vintage Charvos drafti

 

gametimeva Store VINTAGE CARL ZEISS JENA MODEL 2988 OPTICAL OPTOMETRIST DEVICE MICROSCOPE LOOK

 

This is a vintage Becton, Dickinson Co. syringe with a coblat blue plunger, This is ground glass and fit perfect inside with no gaskets. This is circa 1935. This is old and is not new but don't think

 

German vintage barometer with thermometer and hygrometer in wooden case.Working condition , wood scratches partially.

 

This auction is for a vintage wall barometer/ thermometer made by Airguide. It is made of plastic with a glass lens. I cannot vouch for the accuracy of the barometer, but the thermometer is right. It

 

this is a thermometer barometer hygrometer all 3 seem to be working in good condition for the year! nice patina! copyright 1930 by selsi company inc n.y.c. n.y. germany brass and wood. this would be a

 

Beautiful Vintage Handmade Blue/Silver Metal Marble Kaleidoscope 12" long, 1 1/2 dia. Marble slides in and out and can be changed out to what other 1.25 dia. marbles you may have :) Selling some of my

 

... PERFECT SPECIMENS .. SEE HAND WRITTEN WELL DESCRIBED LABELS ! .. ALL DIFFERENT ! I normally offer this type of Specimen one at a time BUT I currently have a backlog of Slides from a Private Collec