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Guinea Bissau DQL100-G2 Mine Suspension Compass
The DQL100-G2 suspended compass inclinometer and the FD-200 slope gauge are combined into a single set for measuring horizontal and inclined angles in mine shafts and tunnels. The instrument is primarily used to measure magnetic azimuths and the inclination angles of compass traverse lines in secondary roadways within mining areas and on retreat mining faces. Its overall design is based on the angle-measurement method known as the “cross-string method,” making it particularly convenient for measuring horizontal angles in underground workings subject to external magnetic interference, such as tunnels with metal supports and mines containing iron, nickel, and other ferrous or nonferrous minerals. At the same time, the instrument retains the basic structure of a conventional suspended compass, allowing it to be used as a standard suspended compass for determining magnetic azimuths when no external magnetic interference is present.
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Product Description
1. Magnetic needle length: 100 mm
2. Minimum graduation of the dial: 1°
3. Estimated reading: 30′
4. Instrument net weight: 0.5 kg
5. External dimensions: 320 × 170 × 20 (mm)
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