20mm Lead Density Cube with Hook Safety Supplies_Eye Protection Natural gas Bunsen burner with

Natural gas Bunsen burner with an anti-tip cast iron base and adjustable air flow

High-tension power supply driving spectrum and discharge tubes in atomic spectra and gas discharge demonstrations for advanced physics classrooms

Mounted thermistor on a demonstration base with 4mm plug connections

this six-metal density cube set of brass

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

20mm Lead Density Cube with Hook Safety Supplies_Eye Protection Natural gas Bunsen burner withSuspends a 20mm solid lead cube from a spring scale for water immersion density measurement, the heaviest specimen in the series at 11. 3 g cm for extreme density reference.