« See more Westcott C-Thru Proportional Scale

The Westcott C-Thru Proportional Scale is used to calculate enlargements or reductions from 10% to 1000%, from 1" to 100". Made of tough plastic, it has large, easy-to-read markings.

Proportional Scale, 6"
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® Westcott is a registered trademark. ® C-Thru is a registered trademark.