ELECTRICAL VIBRATOR Comprises a steel rod clamped near one end through two 4 mm terminals. Which passes through a small solenoid and between the poles of a magnet. Adjustable contact points fitted through a second pair of terminals make alternating connection with an adjustable contact on the rod. The rod has a small hole at one end for the attachment of thread which passes over a bench mounting pulley and supports a scale pan. For 2 V a.c. Supplied with pulley, clamp, and scale pan.

ELECTRICAL VIBRATOR Comprises a steel rod clamped near one end through two 4 mm terminals. Which passes through a small solenoid and between the poles of a magnet. Adjustable contact points fitted through a second pair of terminals make alternating connection with an adjustable contact on the rod. The rod has a small hole at one end for the attachment of thread which passes over a bench mounting pulley and supports a scale pan. For 2 V a.c. Supplied with pulley, clamp, and scale pan.