The practical carver and gilder's guide and picture frame maker's companion (1900)
Savory, Charles H · London : Kent & Co. ; Cirencester : C. H. Savory · leaf 142
13^ THE CARVER AND GILDER's GUIDE. The engraving below will better explain it than any descrip- tion could do. … By this method almost any amount of pressure can be given to the four mitres, and it can be seen at a glance if either of the mitres could be improved by taking a shaving off at the shooting board. If the mitres are satisfactory take out the slip of deal from the string, when the frame will be…
Carving (Decorative arts) · Gilding · Picture frames and framing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.