Printing : a practical treatise on the art of typography as applied more particularly to the printing of books (1904)
Jacobi, Charles Thomas · London : G. Bell & Sons · leaf 164
ps, and blue and white MONOTYPE COMPOSING MACHINE 137 keys for figures, fractious, reference and commercial signsand other sorts, whilst three black keys are used for fixed -sized spaces, and one for the justifying spaces. Thirty more keys at the head of the board are red withwhite figures—two sets… … FlG. 96. MONOTYPE KEYBOARD. the calculating and recording mechanism (for columnwidths) back to zero at the end of each line. The keys are simply caps to small brass rods (termedplungers) which are set in fifteen vertical rows (of seven-teen keys each), the two top horizontal rows of fifteen…
![An illustration from The daily newspaper : the history of its production and distribution / [G.H.F.]. (1878)](https://img.insideoutlibrary.com/img/200/ia-dailynewspaperhi00ghf-7-1.webp)
