Electric Tuning Fork Lab Equipment and Supplies_Lab Equipment Designed to project narrow beams

Designed to project narrow beams through interchangeable slit plates

Polished beech wood test tube rack with twelve vertical holes sized for tubes up to 28 mm diameter

Discontinued bench instrument with continuously variable 0-30V DC at 2A plus stepped 1-6V AC in 1V increments

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

Electric Tuning Fork Lab Equipment and Supplies_Lab Equipment Designed to project narrow beamsCast 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.