Steel precision polygon set
Polygon set with hexagon, octagone and decagone
Obtained from Belgium
Product details: Steel precision polygon set | G Mattheys | Targets and prisms | |
Like the 30 degree polygon in my collection, these polygons can be used for measureing angles exactly using an autocollimator. The hexagon is 60 degrees per turn, the octagone 45 degrees per turn and the decagone 36 degrees per turn.
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Polygon set with hexagon, octagone and decagone
Obtained from Belgium
Product details: Steel precision polygon set | G Mattheys | Targets and prisms | |