Alro 200R Very rare dutch circular slide rule ALRO 200R After 2 years I have started again to sell some of my slide rules and some other interesting things about calculating. I offer a very rare dutch

 

Here is a silver/? syringe, no markings on the syringe but needles say bd yale

 

This is a Garrett kit that was only used once! It has the Professional 14 inch plastic pan, a 10 1/2 inch finishing pan and a combination classifier for filtering out rocks and gravel. You get everyth

 

Vintage Brass SALEM Ships Wheel Compensated Barometer, Working, 2 small dents, 4 1/2" diameter and 6 1/2" outer wheel diameter,  weight 1 pound 8 ounces, see 7 pictures. Click on the picture to enlar

 

... 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

 

Vintage Minigenerator Nuclear Rate Meter Union Carbide Does Nothing About 7-1/8" Long, 4-1/4" Wide and 5" Tall (the height is from the bottom to the top of the handle) Used, Old, Worn, Has scratches,

 

THIS AUCTION IS FOR A RARE CURTA TYPE 2 CALCULATOR SER# 519951. AS YOU CAN SEE FROM THE PICS I HAVE THE ORIGINAL CARDBOARD BOX, MANUALS, ETC. THE CASE AND THE CALCULATOR HAVE A SLIGHT SCRATCH ON THE B

 

Vintage Airguide weather station for temperature, humidity, and weather change; 40 plus years; nice wooden case with clear lettering; some care marks showing on back; nice decorative wall piece, just

 

THIS IS A RARE No 2 CXL BLASTING MACHINE IN EXCELLENT CONDITION...PLUNGER AND MECHANISM WORKS PERFECTLY...DONT MISS THIS NICE ONE...PLEASE ASK QUESTIONS BEFORE BIDDING...I CAN SEND MANY MORE PICTURES

 

One microscope slide with 21 selected marine fossil diatoms from a deposit near Redondo Beach California USA. Mounted in Zrax, a special high refractive index diatom mountant. Will ship worldwide; Fla