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Commonly referred to as a Clinometer (as in typical marine applications like boating). Large Clear Markings allow readability at twelve (12) feet. Special dampening fluid precisely controls movement of ball. Unique Compound Tube with Two (2) Curves. Precise readings at lower angles while still providing a full ±40º range.

A Clinometer is any of various surveying instruments for measuring angles of elevation, slope, or incline with respect to gravity. Also known as an inclinometer, slope indicator, or gradiometer, these precision instruments provide accurate real-time measurement of slope in Degrees.