This vintage Alvin Opisometer Measuring Gauge, model 1114, is a precision drafting tool made in Switzerland. It features a .186 scale and is perfect for accurate measurements in engineering and science. The brand Alvin is trusted in the industry for its quality products and this opisometer is no exception. Use this tool to measure distances on maps, blueprints, and other drawings with ease. Its compact size makes it easy to carry around and use on the go. This is a must-have for any collector of vintage drafting tools or anyone in need of precise measurements.
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