How to work it; a manual for the use of the Ben Day rapid shading mediums and its registry attachments (1913)
Day, Ben, Inc, Day, Benjamin, 1838-1916 · New York, Reprint by Ben Day, inc. · leaf 14
at will over the drawing without any further mechanical opera-tion except the adjustment of the different films desired in thesliding carriages. It can be used similarly, as shown, upon any 4 THE BEN DAY RAPID SHADING MEDIUMS litho stone having sufficient dimensions to make this ready con-venience… … THE HOLD-FAST PLACED DIRECTLY UPON A LITHOGRAPHIC STONE, WITHTHE SHADING MEDIUM LOCKED IN THE SAFETY ADJUSTERS. [The Hold-Fasts application, here, would be the same for surface drawingson card-board or metal. This illustration shows the apparatus locked up in Itsclosest compass.] forward cross-bar…
Drawing instruments
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