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John Duncan Bertie Fulton
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14,903. Fulton, J. D. B. June 30. Clinometers.-An instrument for determining the angle of sight of a target T not directly visible from the battery position B comprises a telescope l fitted with a clinometer m and revolubly supported on a graduated disk c, which is mounted on a universal joint. The instrument is placed at a point o, and, by successively sighting the battary and target positions, the disk, c is brought into and fixed in the. plane of the points B, T. The angle T B 0 being previously determined, the telescope is then set parallel to the line T B, when the clinometer m indicates the required angle T B H. The clinometer consists of a lever pivoted at m<1> and carrying a spirit level. n, which when the telescope is tilted is brought back to its level position by means of a screw p.
GB190614903D1906-06-301906-06-30Improved Artillery Director for Determining the Angle of Sight.
ExpiredGB190614903A
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