Special Offer for Members:
Brunton Partnership

GSA is thrilled to partner with the indispensable compass maker, Brunton, which is now owned and led by a female geologist. GSA members get 20% off all Brunton purchases any time of year.

Shop Brunton
Use discount code GSAmember at checkout.
A man uses a Brunton Transit compass to take field measurements.
Credit: Brunton

Since the invention of the pocket transit in 1894, Brunton has been providing this essential tool for field geologists around the world. Brunton transits and compasses are all designed, manufactured, and sold from their headquarters in Riverton, WY, USA.

Brunton is an Organizational Partner of the Geological Society of America, supporting its field camp scholarships and sponsoring events and programs throughout the year.