My percision mechanic journeyman's piece, last update: 18.04.2024
Workshop > Handcrafted
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In 1985, I took my final exam to become a precision mechanic. The practical segment required crafting a custom journeyman's piece. Having discovered an old Brunton compass at a flea market, I decided to recreate it for my project. I produced detailed technical drawings, incorporated exam-specific measurements, and obtained approval for these plans. Finally, I successfully manufactured the compass.
August 2019, after some more experience with Autodesk Fusion 360 I constructed the compass in CAD.
A Brunton Pocket Transit is a precision compass made by Brunton. The instrument was patented in 1894 by a geologist named David W. Brunton.
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Below is an excerpt from the 1919 Lietz catalog.
Brunton compass in the Lietz catalog 1919
Below is an excerpt from the 1955 Fennel catalog, which includes instructions on how to use the Brunton pocket transit. Images are provided courtesy of Geo-FENNEL GmbH.
Fennel catalog 1955
Fennel catalog 1955
Fennel catalog 1955
Fennel catalog 1955