Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 277
ith a direct ray at an angle of45° from the vertical. The Commandant op the RoyalSchool of Musketry, Hythe {com- municated) :— Observations on Artificial LightingOF Miniature Rifle Ranges. On miniature ranges the most suitablemethod of illuminating the target is toprovide a number of incandescent… … PiiutYS nane. AH o AT Bl0l.i cf DnnacTO aJuirTE-RweiOHTS. So^flTrrcflN &( These reflectors were attached toordinary batten holders, 2 ft. apart, fixedto a movable frame and placed at adistance of 2 ft. 6 in. from the face ofthe target to the centre of the filamentof the lamp, the object of the…
Lighting
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