5m Retractable Steel Tape Measure with Lock Capacity_500mL reading everything from cell voltages

reading everything from cell voltages to high-tension supply outputs on a single meter

Illuminated solar system model with a socket-lit sun

Designed for science experiments but can also be used in heaters and electrical appliances

sliding through a full octave from C5 (521Hz) to C6 (1024Hz) for hands-on comparison of length to fundamental frequency

supporting renal anatomy teaching beyond textbook illustrations

5m Retractable Steel Tape Measure with Lock Capacity_500mL reading everything from cell voltagesFor larger laboratory and shop measurements requiring rigid extension, this five meter retractable tape measure pairs a 13 mm curved rust proof carbon steel blade with a locking control.