Check the listing for details. Triangular Ruler, Mechanicsl/Engineer/Architect, Picket P-232A. Condition: Used. Listed at 10.00 USD. Triangular Ruler, Mechanicsl/Engineer/Architect, Picket P-232A. This is in good condition, only one mark I couldn’t get off, but has been used successfully many years. Pics look yellowish but it’s white.
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