Measure pitch/grade/slope/taper

9:42
What`s a BTU? A ton of heat & cool?

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Slope and Grade

11:40
The Smart Tricks Inside Telescopic Machines

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How To Find Grade | Drainage And Landscaping

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How to Use a Line Level to Calculate Grade, Slope

11:02
Grade calculations: calculate drop, given grade% and run (metric&ft-in)

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Reading Stakes

10:08