RECTA DS 40Scale for calculation of the declination and scale in mm.,clinometer in the cover, dimension: 72x52x15.8 Weight 41 g.
RECTA DS 50Correction of the declination, magnifying glass 16mm., Clinometer, 1:50'000, 1:25'000,1:15'000 scale , Size 101x65x17.5 weight 72g
RECTA DS 50 GGlobal System, declination correction, magnifying glass 16mm, clinometer, 1:50'000, 1:25'000, 1:15'000 scale Size 101x65x17.5 mm weight 72g.
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