Double Concave Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Included_Rod & Base & Clamps with a 6cm cylinder extending

with a 6cm cylinder extending to 16cm overall for suspending submerged specimens in the bucket

the smallest in the Alnico horseshoe series and well sized for individual student handling during basic attraction-and-repulsion lessons

demonstrating Bernoulli's principle quantitatively

Used to bridge a 4mm-socket instrument to a bare-component test point on the bench

waterproof

Double Concave Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Included_Rod & Base & Clamps with a 6cm cylinder extendingRange rated 50mm double concave glass lens spanning 300 1000mm focal lengths, ground polished edges and optically worked surfaces giving long bench divergence flexibility in refraction work.