Light and lighting . V S hool Room lighted by low pressure (dired lighting).. VI Workshop lighted by incandescent gas (low pressure). THE ILLUMINATING ENGINEER (aikii.) 207 and over bench D it is bad, due tomantles being out of condition. Bench Dshould get practically constant illumina-tion of a high value if mantles were ingood order. Table XI. Comparison of values in workshopillumination. Fig. 18. Illumination in Calculated Observed. Position 1 25-7 30 Bench A. ,, 2 14-0 15 Polar curve ,, 3 33-46 35 Fig. 19 Position 1 9-2 8-75 Bench B. „ 2 3-54 4-5 Polar cur
Light and lighting . V S hool Room lighted by low pressure (dired lighting).. VI Workshop lighted by incandescent gas (low pressure). THE ILLUMINATING ENGINEER (aikii.) 207 and over bench D it is bad, due tomantles being out of condition. Bench Dshould get practically constant illumina-tion of a high value if mantles were ingood order. Table XI. Comparison of values in workshopillumination. Fig. 18. Illumination in Calculated Observed. Position 1 25-7 30 Bench A. ,, 2 14-0 15 Polar curve ,, 3 33-46 35 Fig. 19 Position 1 9-2 8-75 Bench B. „ 2 3-54 4-5 Polar curve ,, 3 2-68 1-75 Fig. 20 „ 4 9-2 8-0 Position 1 16-6 20 Bench C. „ 2 16-9 11-5 Polar curve ,, 3 16-9 14 Fig. 19 Position 1 24-56 8 Bench 1). „ 2 26-66 10 Polar curve ,, 3 22-06 7 Fig. 19 (7) Indirect Lighting in a Motor-carShowroom. Fig. 21 gives the ceiling plan of a motorshowroom on a ground floor showing theposition of lighting points for the in-direct illumination of the floor 13 feetbelow it. There are windows opening onto the street on two sides, and extendingright up to the cei
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