Rolatape Professional Measuring Wheel
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By Calculated Industries. The most advanced trigonometric dimensional calculator available on the market. Full trigonometric functions... sine, cosine, tangent, arcsine, arccosine, arctangent. Precise angles down to degrees, minutes and seconds... custom D:M:S key. Works in all building dimensional formats. Enhanced stair solutions. Instant rafter solutions, right angle keys. Preference feature permits scrolling and permanent setting of