This Ross London® compass with adjustable legs and an external spirit level - this
beauty measures 4 inches in diameter, stands 3.5 inches tall with the lid closed,
and weighs over 3 lbs! It is a classy and fully functional repro of an antique stand
surveying Brunton compass.
The Brunton Compasses is an instrument used by geologists for measurement of
the altitudes of structural features. This compass can help a person develop the
ability to visualise lines and planes in three-dimensional space. On the cover of
this compass there is a Natural Sine Scale for calculations of different readings
during a survey. Under the cover is a mirror used for taking reflecting readings from
the dial. It has a level inside, which tells you when the base of the compass is
horizontal. The levels are adjusted by moving the lever situated under the
compass. The entire mechanism allows measurements of dip or plunge angles.
On shutting the compass, a needle lift mechanism locks the compass needle.
This protects the magnetism when transporting the compass.
This beautiful Brunton is around 4" in diameter and 1.5" thick. This is a fully
functional New Brunton compass, and is made exactly like the ones made around
the 1890. |
