AmScope BSS-120B-FR Single Arm Boom Stand and 76mm Collar Diameter

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This single-arm heavy duty boom comes with a solid steel pillar, a long solid aluminum arm and a pin-tail focusing rack. The diameter of the holder ring is 3" (76mm). It is an idea l stand for gemologists, collectors, engravers and engineers in industries. Features & Specifications: 3" (76mm) Holder Ring 26" Overall Length 20" Single Arm 16" High Pillar 10" x 10" x 3/4" Solid Cast Steel Base Shipping Weight: 45 lbs Show more