Solid Brass Bruntin Surveying Pocket Compass
This is an excellent replica of the regular solid brass Brunton surveying pocket transit compass.
The Brunton Compass remains many geologists’ most trusted tool, combining the principles of the surveyor's compass,
prismatic compass, clinometers, hand level, and plumb.
The Surveying compass unfolds to produce two sights with peepholes. You can either sight through a clear window in the lid or lay the lid fully open and use the second hinged peep sight. The inside cover has a mirror with a vertical line inscribed. The perimeter of the face has a compass rose and the interior of the compass rose has two spirit levels and a movable scale for use as a pocket transit. There is a slotted screw on the outside of the case that turns a gear that rotates the entire compass rose to adjust your local magnetic declination angle (the difference between true north and magnetic north).
Turning the brass surveying compass on its side and adjusting the spirit level allows for an altitude angle measurement (while viewing the spirit level using the mirror hinged at 45-degrees). This model is accurate to one degree in azimuth, and has a 10 arc minute resolution for vertical angles.
Measures: L=6,0cm, W=5.5cm, H=3.5cm
A perfect item for the collectors
