Rudimentary treatise on the erection of dwelling-houses : illustrated by a perspective view, plans, elevations, and sections of a pair of semi-detached villas ... (1896)
Brooks, S. H. (Samuel H.) · London : C. Lockwood and Son · leaf 113
89 THE ROAD PEN. marked b, making the handle of sufficient length to use conveniently as a drawing pen^ thus combining two instruments in one. … blades of the pen be nearly perpendicu- lar to the paper, and both of them touched at the same time. The Road Pen. This instrument consists of two pens, a and b, so arranged with a spring which gives them a tendency to separate from each other to the extent of about half an inch, which tendency is…
House construction
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
