Francis Barker FB1204 Prismatic Artillery Compass c.1982 John 'Rob Roy' McGregor In the same year

In the same year

Designed for use anywhere in the world in a band of latitude between 50 degrees N

The integral thermometer is in good working order

This instrument was made in France for the British market and is marked on the back of the case: 'Depose HC'

Francis Barker FB1204 Prismatic Artillery Compass c.1982 John 'Rob Roy' McGregor In the same yearA rare FB1204 Artillery Surveyors Prismatic Compass, made in England by Francis Baker and dating from c. 1982. Brass and aluminium case with push fit lid, liquid filled, calibrated in 1 2 degrees, and with a flange on the base for tripod mounting. Suitable for use as a Landing Compass. The FB1204 model was in production until the late 1990's. In the Barker 1982 catalogue it was described as 'giving a quick steady reading. Cobex dial divided to half