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Description
The instrument consists of a taut suspension movement, light source, projection system, scale and sensitivity control switch. All components of the instrument are housed in a dust free aluminium cabinet nicely finished by stoving enamel paint.
The light source consisting of a 4V 4W lamp is mounted on a small rectangular detachable plate fixed in front of the galvanometer housing to allow the bulb to be replaced. A circular plate is fixed on this rectangular plate which enables the exact adjustment of light spot. The Galvanometer indicator consists of a bright circular spot of light with a vertical hair line shadow on a translucent scale with dual graduations in millimeters (0.14 & 7.0.7 cms).
Two models are available for different purposes:
| Cat No. | Resistance Of Coil in ohms | Period in Seconds | Critical damping resistance in Ohms | Terminal resistance in Ohms | Sensitivity | |
| PL64 | 20 | 2 | 140 | 17.5 | 7 | 0.35 |
| PL64.01 | 1500 | 1.7 | 13000 | 1345 | 70 | 0.046 |
Over all size : 280 x 185 x 140 mm
Weight : 3 Kg