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Duct Calculation Slide Rule
$69.95
Contractor Exam Calculator
$48.95-
Duct Calculation Slide Rule
One of our most popular catalog items! This durable two sided plastic sizing wheel comes with a complete instruction manual for residential and commer…
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Contractor Exam Calculator
The Material Estimator is one of the few calculators allowed in the exam and is designed for contractors, trades people and estimating professionals w…
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