Burn, Robert Scott · London : Ingram, Cooke, and Co. · leaf 129
Wewithout … have hitherto described the construction of isometrical drawingsreference to the use of scales for taking measurements from. If an object be drawn geome-trically to a scale, the isome-trical projection is not ex-pressible in the same way;thus, the isometrical projec-tion of a square one inch inthe…
Drawing · Wood-engraving
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
