US$ 22.95
the upright clip steadying a single lens at the working height of a typical ray-box or light-source setup for consistent image-formation work
Square-section aluminum tube 1 meter long with side graduations and four sliding riders
marked (Al) on one face with a total 1
sized for visible-time-scale RC charging and capacitor-driven momentary lamp-flash experiments
Frosted Glass Gas Jar Cover, 3 inch, 1.7mm Thick Subcategory_Tongs the upright clip steadying aFrosted glass gas jar cover in 1. 7mm thick construction measures 3 inches for sealing gas jars during gas collection procedures.
US$ 22.95
US$ 14.10
US$ 44.99
US$ 14.09