$25

River Sponge Spongilla fluviatilis Spicules Microscope Slide

$35

Hora Dipterocarpus zeylanicus Microscope Slide

$20

Ichthyosporidian in liver Microscope Slide

$16.99

Antique Schaar & Company Laboratory Chicago ILL Volts

$865

Antique ca.1820 6 Draw Gilt Brass Spyglass by Smith London Monocular Telescope

$263.29

Vintage Cooke Troughton & Simms M12 Incident Polarising Microscope c1960s, Cased

$35

Hopea ovalifolia Microscope Slide

$39

Antique WM Welch Scientific Resistance Coil - Vintage Steampunk

$34.99

Vintage Dietzgen Phillips Slide Rule 1759B Wood Case Conversion Chart USA Math

$803.37

Very Rare Antique Brass Saxton Elliott Bros Water Current Flow Meter Gauge Boxed

$243.04

A fine 6" single arm protractor by Adie.

$101.27

Antique Surveyor's Brass Pocket Inclinometer Gauge with Embossed Leather Case