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— crs

When 'State Plane' Isn't State Plane: The Custom-Scale-Factor Trap

Some surveying firms apply a custom scale factor or rotation to their state-plane work to align with a local monument. The PNEZD output looks like normal state plane to any downstream tool -- but verification points land 5 to 50 feet off. Here's how to spot it, diagnose it, and fix it.

May 2026 · 6 min read

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