TUNING FORKS SET, DIFFERNTIAL AND SYMPATHETIC

Product Description

For demonstrating sympathetic vibration and resonance. Two matches, steel or aluminum with spring control and magnetic damping. Basic movement of meter calibrated to 5mA, 100mV. Long, pointer, needle, with thick arrowhead for clear visibility from a distance, moves on hardened and polished steel pivots and jeweled bearings. Mounted is sturdy, plastic frame with transparent front and back windows. One side of frame has color-coded, 4mm socket terminals for electrical and a slot for inserting or removing scales; other side has zero adjustment knob for locking pointer needle. Any one removable, large scale with graduations on both sides can be selected from demonstrates meter can be raised or lowered.

TUNING FORKS SET, LARGE DIFFERNTIAL AND SYMPATHETIC

As tuning fork set, differential and sympathetic but large in size, matched tuning forks of frequency 256Hz Resonance boxes, 29x12x8 cm, with rubber feet. Boxes are large enough for conveniently putting a hand inside to mount the tuning forks.