3B Scientific Inclination and Declination Instrument - Manual

3B SCIENTIFIC® PHYSICS
1
Inclination and Declination Instrument U8495258
Instruction Sheet
10/10 ELWE/ALF
1 Base-plate
2 Pillar
3 Hand-wheel
4 Scale ring
5 Magnet needle
6 Cradle
7 Connecting sockets
1. Description
The inclination and declination instrument is used to
measure the inclination and declination of the
earth’s magnetic field, and to demonstrate the
magnetic field produced by a current-carrying
conductor.
The instrument consists of a base-plate with a pillar
which supports an axially rotatable cradle carrying a
magnetic needle and a scale ring. The scale ring is
divided into four quadrants (4
× 90°). The cradle can
be rotated by a hand-wheel, which also has a
separate quadrant scale. The magnet needle is
mounted on a bearing consisting of sharp agate tips,
and is free to rotate in either a horizontal or a
vertical plane according to the direction of its axis.
The sockets on the cradle can be used to pass a
current of up to 10 A through it.
2. Technical data
Length of magnet
needle: 100
mm
Overall dimensions: 200x140x200mm 3 approx.
Weight: 620 g approx.