Up for auction is this vintage Dietzgen Topographic ( Abney ) Level. This is used to measure percentage of grade elevation by sighting a target at the same level from the surface as the viewer's eye.

 

Vintage D.W. Brunton Pocket Transit Compass - Wm. Ainsworth & Sons

 

One pair of highly sought after Docter Optic Deltrintem 8x30 binoculars. Made in Germany. Serial #7305386. There is surface wear to the paint and minor wear to the rubber around the eye pieces. Lenses

 

The scale and box both show signs of wear consistent with normal use and age.

 

This is a 500-ml borosilicate glass flask (round bottom flask or boiling flask) that has been sealed, pumped to high vacuum, baked out, and backfilled with xenon gas to a pressure of 90 torr. When exp

 

Check out my other items! (Click on the symbol to see the other kaleidscopes in my store!) Award-winning design, one-of-a-kind, stained glass kaleidoscope, signed by artist. Completely handcrafted by

 

Up for bid is a pair of vintage, steampunk, mesh sided Willson Safety Goggles in case. The glasses are 5 inches wide from side to side and each lens is just shy of 2 inches in diameter. There is about

 

Vintage Microlux Microscope & Dovetailed Wood Storage Box & KK Tachibana Micro-Data Cards. Made in Japan. Lenses 5x 10x 15x Very good condition, as shown. Any questions, please ask. Thank you

 

This is a unique heirloom quality brass pedestal kaleidoscope by glass artist Mary Aldrich. The piece is newly crafted and incorporates my distinctive cast and decorative solder detailing on the body

 

Kueffel and Esser Co. Alidade Model T-211618 In Original Case Crystal Clear Optics in a carefully owned and used instrument From the dry, high desert climate of Colorado It is rare indeed to find deca