Brass-Plated Scale Pan with Cording, 107mm Diameter Lab Equipment and Supplies_Lab Supplies Cut-away section on this chloroplast

Cut-away section on this chloroplast model exposes grana stacking

Pairs a 75mm aperture with a 150mm focal length on a convex glass surface

Sodium chloride lattice kit with 27 color-coded gray and green atoms plus 54 connectors for building the full cubic NaCl crystal structure in three dimensions

a lamp house

Suspends a 20mm solid zinc cube from a spring scale for water-displacement density measurement

Brass-Plated Scale Pan with Cording, 107mm Diameter Lab Equipment and Supplies_Lab Supplies Cut-away section on this chloroplastFor classroom weighing experiments on beam balances, this brass plated scale pan measures 107 mm across and 0. 38 inches deep, suspended from 37. 5 inches of cording.