Description

and a 3mm thickness

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

six steel wires carrying 20 beads each for hands-on instruction in counting

and a dial gauge readout

Double Concave Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Included_Rod & Base & Clamps and a 3mm thicknessRange 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.

Exchange/Return Notes

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Double Concave Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Included_Rod & Base & Clamps and a 3mm thickness

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