High Resolution Plastic Economy Dynamometer with Zero-Point Calibration Capacity_50mL Single-pole double-throw brass knife switch

Single-pole double-throw brass knife switch on a durable plastic base

The large crystals indicate slow cooling within a magma chamber

Used as a substrate for saponification reactions and lipid-chemistry investigations

Designed for short-circuit-adjacent investigations

Refill kit provides replacement chemicals for NYS intermediate learning activities with pre-measured quantities and safety documentation

High Resolution Plastic Economy Dynamometer with Zero-Point Calibration Capacity_50mL Single-pole double-throw brass knife switchPre measurement zero point calibration eliminates bias from the empty hook weight, with a clear plastic body and high resolution scale for classroom force reading.