For precise quantitative measurement of electricity. Robust construction, easy to operate and repair. Moving coil has a fairly large periodic time and large moment of inertia. With zero adjusting and locking device. The phosphor bronze suspension strip prevents shifting of zero. Deflection of galvanometer is closely proportional to the current. Fitted with a sensitive spirit level and three levelling screws. Coil fitted with a high quality concave mirror of focal length 100 cm.
|Resistance of||Time Period|
|The coil (ohms)||(Sec.)|
Category: Physics & Electronic Laboratory Apparatus
CUBE METAL SET
Set of six, comprising one each of Aluminium, Iron, Copper, Brass, Lead and Zinc.
Size, side 10, 20, 25 mm.
Set of six perspex geometrical shapes, consisting of one each triangle, square, circle, rectangle, hexagon and octagon.
Light alloy, with single hole to take rods up to 13 mm. diameter.
GEOMETRICAL MODELS WOODEN SOLID
A set of 16 or 21 plane and solid geometric shapes. The plain shapes include triangle, rectangle, square, circle, semi circle, figure with five sides, six sides, eight sides, right angle. Solid figures include triangle, rectangle, cylinder, square, cone, square base pyramid, triangle base pyramid, pentagon, hexagon, octagon, sphere and ellipse. Supplied in a polished wooden box.