I photographed this WWI-era Ideal Stencil Machine during the 25th Olympic Air Show in Olympia, Wash.
Model No. 2 was a 5/8-inch version originally created in 1913, but the dataplate on this example indicates it must have been made after 1919. The No. 1 model was for 1-inch letters and the No. 3 was for 7/16-inch type.