2-Prong Adjustable Clamp, 8-30mm Capacity, Vinyl-Coated Jaws Glassware_Glass Bottles modeling the principle behind fiber

modeling the principle behind fiber optics

Wider-apex 40° x 70° x 70° glass prism

the standard frequency for hearing-test calibration

8mm rod attachment and a centered 50mm aperture together hold a lens square against an optical-bench rail for repeatable refraction

Cover-protected single-phase rheostat with constantan winding and 4mm safety socket terminals

2-Prong Adjustable Clamp, 8-30mm Capacity, Vinyl-Coated Jaws Glassware_Glass Bottles modeling the principle behind fiberTwo prong adjustable clamp with an integral bosshead and vinyl coated nonslip jaws, gripping burettes, tubes, and flask necks from 8 to 30 mm in diameter.