Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 76
may be notedthat it has been found advisablefrequently to supplement figures at thisheight with measurements made atplatform level in any places of lowillumination where it is important that THE ILLUMINATING ENGINEER (march, 1919) 65 the edge of the platform or obstructionson it should be clearly… … Fig. 4.—Showing simple arrangement forlighting a station name plate. collecting barriers and for time-tables.As regards the collecting of tickets, it isquite usual to find special lamps in use, infact, were this not so the general standardof illumination would have to be un-necessarily high, as not…
Lighting
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