4mm Spring-Loaded Adjustable Slit for Optics Bench Hypotenuse_50mm Hand-painted female pelvis model exposes

Hand-painted female pelvis model exposes ilium

75 lb retort set accepting 10 by 1

paired with two 50N spring balances and two wrest pins so students can verify the laws governing frequency

Aluminum-handled collecting net swings lightweight through tall grass and air sweeps for classroom field trips and introductory entomology sampling work

237kg hooked masses for measuring spring extension under load and calculating spring constants

4mm Spring-Loaded Adjustable Slit for Optics Bench Hypotenuse_50mm Hand-painted female pelvis model exposesSpring loaded 4mm slit on a rod attachment opens and closes smoothly under finger pressure, giving students a continuously variable aperture for diffraction and spectroscopy work.