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To produce mechanical vibrations when used with a signal generator. The input is fed to a coil, which is mounted within the field of a cylindrical permanent magnet. The unit is mounted on a strong base and is enclosed in a plastic case. The coil and magnet assembly are protected from the entry of foreign particles. A threaded extension of the armature allows attachment of the item to be vibrated, e.g., plates for chladni’s figure experiments. A specially designed coil system enables the unit to be operated at its maximum rating for a prolonged period without any damage due to overheating. Electrical input via a pair of 4 mm shielded sockets and oscillating mechanical output is available through a shaft at the top. Alocking arrangement provides safety to the apparatus during storage or transportation by blocking the motion of shaft. The unit is electrically secured by means of a fuse. Avoid long periods of sustained rapid vibration and keep dry as moisture will damage the mechanism

Two copper plates, size 120 x 50 mm, each fitted with a terminal on wooden support. Complete with glass jar, 150 x 100 mm. ht x diam.

Moving Coil DC Voltmeter (EDM-80). Scale Length approx. 60 mm with anti-parallax mirror scale, dial size 72 x 72 mm with color coded terminals. Overall size 90 x 110 x 125 mm approx. Accuracy : ±2% FSD.

3½ Digit LCD Display Covering 5 Parameters: pH, Conductivity, TDS, ORP and Temperature. Battery cum mains operated, complete with accessories, fitted in briefcase.