20m Fiberglass Tape Measure with PVC Cover and Winding Handle Type_Tall Form Heavy-current 1

Heavy-current 1

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

Jumbo three-dimensional frog dissection model with keycard demonstrates amphibian anatomy and organ systems for detailed vertebrate teaching

Polished non-warping wooden base with a built-in meter-scale carries a compass-box magnetometer

Used to wind precision resistance coils that don't drift with temperature

20m Fiberglass Tape Measure with PVC Cover and Winding Handle Type_Tall Form Heavy-current 1For field surveys, outdoor physics activities, and long distance laboratory exercises, this twenty meter fiberglass tape measure carries a non conductive waterproof PVC coating.