Blue Print Frame
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A blue print frame used to make copies of mechanical drawing. The process is done by exposing a sensitized paper in contact with the tracing paper to the light source in the frame. A chemical reaction takes place when washing with water to create a strong blue color, creating the image.
Keywords
tracing, Blue Print Frame, Blue Print Copier, Blue Print Copying Apparatus, Duplicating Blue Print Apparatus, copying, duplication, Mechanical Drawing ToolsGalleries
Mechanical Drawing ToolsSource
French, Thomas E A Manual of Engineering Drawing for Students and Draftsmen (New York, NY: McGraw-Hill, 1911)
Downloads
2400×1287, 487.1 KiB
1024×549, 90.3 KiB
640×343, 46.8 KiB
320×171, 16.6 KiB