1503. "RAC" Taut Suspension Reflecting Galavanometer (Pointer Type) : The coil is supported by taut top and bottom, the galvanometer pointer a knife edge moves over a horizontal scale figured as 25-0-25 having a sensitiveness of one microampere per division. The resistance of the coil is 20 ohms and it is sufficiently damped.
The instrument is fitted with levelling screws and is also provided with a switch at the top for clamping and releasing the" coil.

1504. Dead Beat Galvanometer
With Lamp and Scale Outfit.

1505. Phosphor Bronze Strip Imported.

1506. Mirrors for Galvanometer
10 mm dia Optically True for reflecting galvanometers plain/concave/convex.

1507. Galvanometer 'D' Arsonal, Mirror and Scale Form, Cenco type. The case is of Mangalium mounted on a special tripod having one long foot which supports the scale, Resistance of the coil is 200 ohms app.
The U Magnet is extra strong and permanent Coil has locking arrangement. Very sensitive.

1508. Ballistic Galvanometer Reflecting
The moving coil is suspended with phosphor bronze strip. The coil carries an optically true Concave Mirror 50 cm. focus. A zero adjuster is provided, when not in use or for transport purpose, the coil can be clamped by a clamping lever. The instrument is fitted with levelling screws and a sensitive spirit level.
By reversing switch on the base, the galvanometer may be made aperiodic.
Resistance Period Sensitivity
Ohms Secs. m. m.
100 7-8 180
500 7-8 400

1509. New Ballistic Galvanometer Aperiodic
A fine suspension of about 10 cm. holds a very light specially polished front silver mirror. The moving coil system of the galvanometer is insulated from the case. Copper terminals, Zero adjuster, levelling screw to hold the galvanometer during transit are the important features of the Ballistic Galvanometer, which differentiate it from othar such instruments. Available in Coil Resistance 100 ohms or 500 ohms.

1510. Tangent Galvanometer
The bakelite ring 16.25 cm. in diameter with 3 windings of 2,50, 500 or 2. 5, 50, or 5, 50, 500 turns (normally we supply 2-5-50), The magnetometer is fitted on ebonite plate which is free to revolve in the base of the instrument. The Magnetometer and the ring can both be rotated independently of the base witch is fitted with levelling screws. Compass box with stone agate bearing needle

1511. Tangent Galvanometer,
as above but metal parts Brass.

1512. Compass box:
Consisting of a bakelite case with metal dial graduated in degrees in anti parallax mirror with stone a gate needle.

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