An accurately balanced magnetic needle, strongly magnetised is fitted with hardened steel pivot marking in
jewels cup bearings. The needle can be easily removed for reversal. The inclination scale is of chrome brass
graduated in degrees 0-90 four times.The case is made of non-magnetic steel alloy,duco painted, has easily
removable plate glass window and rotates fully onaheavy brass base, is rotation being measured byabrass
chrome dial reading 0-360°. It is fitted with levelling screw and spirit level.