Brunton Ball and Socket Head Used with Tripod 3051 or 3060
Adjustable needle locking mechanism with two positions: Unlocked - releases the needle for azimuth readings. Locked - momentary release of the needle for strike measurements by pressing and holding the release mechanism, then lock the needle for reading by releasing the mechanism.
Exclusive mount for all Brunton transits
Best works with Brunton 3051 non-magnetic tripod
Adjustable for azimuth and vertical angle measurements
Manufactured using non-magnetic aluminum and brass