Elements of military sketching and map reading (1917)
Barnes, John Bryson, 1876- · New York : D. Van Nostrand · leaf 29
Fig. 8. for sighting or for drawing lines. The scales may bepasted on it. Box Compass (Fig. 9).—A simple box, or needlecompass is preferable for the beginner. The gradua-tions may be clockwise from 0° to 360°, contra-clock-wise 360° to 0°, in quadrants or half circles. A com-pass graduated… … Fig. 9. SOME SKETCHING INSTRUMENTS 21 order of the graduations on the face of a clock) is thebetter as it reduces chances of error in reading. At-tention is invited to the arrangements of the cardinalpoints on the dial of the box compass (Fig. 9). Notethat E is to the left of N. This reversion of E…
Military topography · Maps, Military
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