Signed: MK MDCLXXXIX
When used as a level, the rigid plummet of this gilt brass instrument moves over a quadrant scale graduated in degrees 45-0-45. Sighting is accomplished through a series of nine small holes pierced through the quadrant plate. The holes are at ¼ inch intervals and sighting observations could therefore only have been approximate. By contrast, the scale on the quadrant arc is continuous and so should permit finer readings. But its single degree divisions are marked irregularly and inaccurately.
The shaped, leather-covered case for this small gilt brass instrument also survives.
Height: 72 mm
Inventory no. 49,981