Spare 500g Iron Hooked Weight with Retractable Hook Subject_Astronomy bending measurably under heat as

bending measurably under heat as differential thermal expansion of the two bonded metals drives the visible curvature

Free-standing life-size male urinary tract model exposes kidneys

Eight aluminum-shank tuning forks tuned to scientific pitch (C4 = 256Hz) and ranging from 5 9/16 to 7 1/8 inches

Document analysis kit teaches forensic investigation through ink chromatography

Spare 500g Iron Hooked Weight with Retractable Hook Subject_Astronomy bending measurably under heat asCast iron 500g mass carries a retractable hook for suspension from spring scales, pulleys, or beams, serving as a replacement piece for gravitational and force measurement setups.