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Free Lisp - Interpolate at midpoint of Selected Elevation

This free lisp is useful while working with Land Survey Drawings. It is common practice to interpolate elevations in Preparing Survey Drawings. There are various methods to interpolate values also. But most common and simple requirement that comes up is an interpolation of elevation at the midpoint of 2 available elevations. This free lisp can be used for such requirements, select the two elevations and the lisp will calculate the midpoint and mid value and create a new text.

Interpolate at midpoint of Selected Elevation
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