A Brunton compass , properly known as the Brunton Pocket Transit, is a type of precision compass made by Brunton Inc. of Riverton, Wyoming. Unlike most modern compasses, the Brunton Pocket Transit utilizes magnetic induction damping rather than fluid to dampen needle oscillation. Although Brunton Inc. makes many other types of magnetic compasses, the Brunton Pocket Transit is a specialized instrument used widely by those needing to make accurate degree and angle measurements in the field.