Radio-Lectric no. 420 template use? Wondering what this would be used for, found in a box with some radio rule circuit diagrams. Knob turns to loosen/tighten, all three metal pieces slide.
Rotring compass set (532 209), c. late 1980s. Exceptional quality drafting instruments made by Haff in Germany for Rotring. Set includes a 6 inch wingset compass, extension bar, pump compass, and 2mm
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Rotring compass set (532 208), mid-1970s. Chrome-plated drafting instruments made by Haff in Germany for Rotring. Set includes a 6-inch wingset compass, extension bar, pump compass, and stainless steel 2mm inserts. The
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Rotring compass set (532 208), mid-1970s. Chrome-plated drafting instruments made by Haff in Germany for Rotring. Set includes a 6-inch wingset compass, extension bar, pump compass, and stainless steel 2mm inserts. The
Rotring compass set (532 209), c. late 1980s. Exceptional quality drafting instruments made by Haff in Germany for Rotring. Set includes a 6 inch wingset compass, extension bar, pump compass, and 2mm
