$1000

Exceptional 1890 General Electric Engine-Turned Current Indicator On Slate Base

$52.52

Vintage Negretti & Zambra Percentage Humidity Meter R/22288

$2500

1907 Bausch, Lomb, Saegmuller Co. Solar Transit, Rochester, NY in good condition

$60.6

ANTIQUE J&R ELLIOT, SHEFFIELD - HORN & STEEL BLOOD LETTING FLEAM c1800

$25

Quillwort Spores from Cashmir Microscope Slide Opaque Mount

$749

Antique 1800's W & L. E. Gurley Compact Railroad Surveyor's Compass w/ Wood Case

$33.6

Aldred & Son Wooden Banjo Barometer Oak Made In England GT Yarmouth Collectible

$269.34

Antique Brass Rotating Mechanical Stage for Watson Van Heurck Microscope c1910

$5

Quercus Twig c.s. Microscope Slide by Geo. H. Conant

$11.2

Vintage Map Measuring Tool Opisometer Inches To Miles and kilometers

$499.96

Antique TYCOS SHORT & MASON London STORMOGRAPH thermograph in Copper CASE Rare!

$212.78

Antique Brass Theodolite Surveying Instrument c1900 Transit Compass