Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 201
TRANSPARENT AMBER-LINEDT SQUARES Good Workmanship. Well-Seasoned Material … 2040. Transparent Amber Lined, Maple Blade, movable head, with patentclamping swivel and micrometer adjustment. Size, in Inches, 24 30 36 42 48 Each $3.50 $3.70 $4.20 $4.70 $5.50 PARALLEL-RULER ATTACHMENT For use on Drawing Frames, Drawing Boards, and the Blackboard 2045.
Engineering instruments · Drawing instruments
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