The COMTA suspension mining compass is a cardanic suspended instrument intended for mining survey, such as in tunnels and shafts. Featuring and East to West orientation which when suspended, provides directional readings in mines, an 80 mm needle, accuracy of ± 0,1°, an azimuth dial and declination adjustment of ± 30°. This highly accurate device is suitable for mining geological surveys. Specification: “Kassel”-type cardanic suspension device with adjustable bearings; foldable High quality 80mm needle with adjustable inclination weight Graduation: 1° / 1gon High precision accuracy of ± 0,1° Declination adjustment (± 30°) Weight: 400 grams
