Burn, Robert Scott · London : Ingram, Cooke, and Co. · leaf 129
geo-metrical plan is drawn to ascale of say one inch and three-eighths to a foot, or eleven-eighths, the isometrical pro-jection of the plan will benine-eighths, or one inch andone-eighth. In fig. 117 a com-mon scale and an isometricalone are given ; the way inwhich the latter is… … fig. 116.
Drawing · Wood-engraving
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.