It is an ideal stand for gemologists, collectors, engravers and engineers in industries. Features & Specifications: 3" (76mm) Holder Ring26" Overall Length20" Single Arm16" High Pillar10" x 10" x 3/4" Solid Cast Steel BaseShipping Weight: 45 lbs Single Arm Boom Stand for Stereo Microscopes - Aluminum Arm, Pin Mount, 76mm Focus Block.The diameter of the holder ring is 3" (76mm).
Produced from the finest quality optical white glass Charged surface allows cells and tissues to adhere to the slide Packed in high-quality white plastic boxes Dimensions: 25 x 75mm Thickness: 1 - 1.