Brunton Pocket Transit Compass Value Guide

The Brunton Pocket Transit Compass is a legendary surveying tool that integrates a compass, clinometer, and level into a single aluminum housing. Originally patented in 1894, these 1970-1990 era models are highly collectible for their enduring precision in measuring strike and dip in field geology.

What affects the value of Brunton Pocket Transit Compass?

• Mechanical condition of the clinometer and the fluidity of the needle movement.
• Clarity of the glass and the absence of oxidation on the internal mirrored surface.
• Presence of the original leather case and any surviving technical documentation or manuals.
• Cosmetic state of the black or silver finish on the aluminum exterior housing.

How to Identify Brunton Pocket Transit Compass?

• Look for the 'Brunton' brand name and 'Made in USA' engravings on the aluminum body.
• Verify the presence of the internal clinometer scale and the mirrored lid with a sighting line.
• Check for the original leather carrying case which often features a belt loop and snap closure.
• Ensure the needle features a functional locking mechanism when the lid is closed to prevent pivot wear.

History of Brunton Pocket Transit Compass

First patented in 1894 by David W. Brunton, a Canadian-born mining engineer, this instrument combined a compass, clinometer, level, and plumb bob into a single handheld device. It revolutionized field geology and remains a gold standard in the industry today for its precision in measuring strike, dip, and elevation.