Alvin Scholastic Triangular Scales

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Architectural Scale
Architectural Scale
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Architectural   12" scale with plastic center core offering open divided graduations 3", 1-1/2", 1", 3/4", 1/2", 3/8", 1/4", 3/16", 1/8", and 3/32" to the foot and a scale divided 16 parts to the inch.
Engineering   ...

Alvin is a registered trademark.

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