PTFE-Coated Alnico Magnetic Stir Bar with Pivot Ring, 30 x 8mm Chemical_Standard Buffer One-inch brass ball that threads

One-inch brass ball that threads onto a pendulum string as a heavier metal counterpart to aluminum or steel balls in mass-dependent periodic-motion investigations

sized for heavier-gauge electronics work and laboratory wiring where the 25W iron heats too slowly to flow solder

and federal regulations

including the four 2016-named elements (Nh

5N dynamometer to measure the magnetic-braking force quantitatively

PTFE-Coated Alnico Magnetic Stir Bar with Pivot Ring, 30 x 8mm Chemical_Standard Buffer One-inch brass ball that threadsPTFE coated Alnico magnetic stir bar measuring 30 by 8 mm with a center pivot ring, resisting chemical attack while maintaining stable rotation on laboratory stir plates.