5m Fiberglass Tape Measure with PVC Cover and Winding Handle Capacity_17mL Low-voltage DC motor with a

Low-voltage DC motor with a current-limiting series resistor on a demonstration base with 4mm plug connections

exposing the longitudinal and transverse components of wave motion mechanically

Demonstrates Newton's first law by yanking a metal card from beneath a steel ball

Spring-clipped metal frame on a mounting rod grips gratings

Pairs a 90 by 45mm semicircular face with 15mm thickness on a glass prism block

5m Fiberglass Tape Measure with PVC Cover and Winding Handle Capacity_17mL Low-voltage DC motor with aNon conductive, waterproof, and washable, this PVC coated fiberglass five meter tape measure is housed in a zinc coated steel case with a flush winding handle for field measurement.