| Compass theodolite BUMON |
No. 3055 BUMON
„Tranche Montagne“. For topographic surveys and forest surveying in wooded and hilly areas, for the determination of control points in the photogrammetry, for orientations of the direction referred to magnetic North for the alignnment of antennas, e,.g. directional radio antennas, control of navigation devices. Eccentric, bright telescope for extremely steep aim-ings, erect image, magnification 30x, aperture 40 mm. Precise full circle com-pass (Ø 100 mm) with declination setting (+-30°), graduation 1°/1g, estimation 0.1g/0.1°, magnetic needle with adjustable inclination weight, needle length 80 mm, additionally equipped with horizontal circle (Ø 100 mm) read by magnifier, direct reading 2c/1’. Vertical circle (Ø 64 mm), direct reading 2c/1’). Fast and precise levelling up of the instrument by two cross spirit levels (60“/2 mm).
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