Schereschewsky, Joseph Williams, 1873-, Tuck, Davis Henry, 1886-1953, United States. Public Health Service. Public health bulletin no. 71 · Washington, Govt. print. off. · leaf 167
f glare at sewing machines. The angle of glare at sewing machines is determined as foUows:Let Z=height of lamp filament from table top.it. Let (? = horizontal distance of lamp filament from eye.Let e=height of eye from top of table.Let m=horizontal distance of eye to needle point.^5i = the angle of… … FiQ. 4.—^Method of determiTiing angle of glare at pressing tables. The angle of glare at pressing tables is determined as follows: Let L = height of lamp from top of boards. Let E=height of eye from floor. Let T=height of top of table from floor. Let B = height of top of boards from table top. Let…
Occupational diseases · Factories · Textile industry · Industries
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