Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 194
TRIANGLES FOR ROOF PITCHES ANDEMBANKMENTS … 1950 1950. Amber Triangles for Roof Pitches, six in set per set, $6.00 1951. Amber Triangles for Embankments, eight slopes, six tem- plets per set, 4.50 LETTERING ANGLES
Engineering instruments · Drawing instruments
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