5m Retractable Steel Tape Measure with Lock Capacity_500mL Designed for science experiments but

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

a distinctive density reference against the lighter aluminum and heavier steel cylinders

crossing over

Life-size digestive system model in two parts reveals the esophagus-to-rectum path with stomach

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

5m Retractable Steel Tape Measure with Lock Capacity_500mL Designed for science experiments butFor 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.