Carlson Boretrak2 User Manual

BT2 user manual - H-5911-9004-02-B Page | 40
6.5 Alignment jig
A gyro alignment jig is supplied with all Boretrak2 systems.
When in use, the gyro inside the Boretrak2 must be aligned before a deployment. The gyro is not a north-seeking
device so an initial starting heading must be defined. The starting heading forms the basis of all subsequent
orientation data collected over the course of a deployment. During the alignment routine therefore, the probe must
be held in a position where the starting heading can be surveyed.
The jig cradles the probe during this alignment and provides a baseline which can be used to survey an accurate
heading.
The heading entered in Carlson Boretrak software should be that pointing in the direction of the nose cone of the
Boretrak2 probe.
Spiked feet underneath the jig can be pushed into the ground to ensure it does not move.
A 5/8” thread in the centre of the jig allows it to be mounted on a standard survey tripod.
Figure 40 Gyro alignment jig (left) with probe during alignment (right)

Carlson Boretrak2 Specifications

General

Brand	Carlson
Model	Boretrak2
Category	Measuring Instruments
Language	English