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VINTAGE ENGINEERING & DRAFTING GEOMETRY SET - $100 (OCEANSIDE)
condition:
like new
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These professional kits were standard equipment for architects, engineers, cartographers, and technical students before modern Computer-Aided Design (CAD) software became ubiquitous.
What is Included in the Set?
The velvet-lined case houses a precise assortment of heavy-duty brass and steel drafting tools.
Large Bow Compasses: Located at the top, used for drawing accurate medium-to-large circles. They feature adjustable legs and quick-set needle points.
Ruling Pens & Attachments: The long, straight instruments near the bottom with adjustable thumbscrews at their tips. Unlike modern technical pens, these were dipped into ink, and the screw adjusted the gap between the metal blades to control the line thickness.
Dividers: Similar in appearance to compasses but featuring sharp needle points on both legs, used strictly for transferring precise measurements from a scale ruler to a blueprint.
Extension Bars: Long metal rods used to extend the reach of a compass to draw exceptionally large radius circles.
Leads & Spare Parts Pod: Small containers or slots dedicated to holding replacement graphite leads, spare needles, and tightening screws.
Adjustment Screwdriver: The small black-handled tool in the top right corner, used for tightening or loosening the hinges and pivot joints on the compasses.