Electric Tuning Fork Lab Equipment and Supplies_Lab Equipment this natural gas Bunsen burner

this natural gas Bunsen burner mounts on an extended anti-tip cast-iron base

this metal-framed bench demonstration board uses variable resistors and switchable inputs to show how a meter measures V

mechanical-advantage

Moving-coil 4-ohm driver in a frame that orients vertically or horizontally

Designed to project narrow beams through interchangeable slit plates

Electric Tuning Fork Lab Equipment and Supplies_Lab Equipment this natural gas Bunsen burnerCast metal base mounts a heavy duty electromagnet driven fork at ~80Hz, with a captive thumbscrew on one prong for Melde's standing wave experiment and binding posts accepting 2 6V DC.