Mercator / Gauss-Krüger Lab

Central meridian λ₀

105.0°

Extent

Layers

Tool

Drag to pan, wheel to zoom, double-click to reset. Measure compares geodesic vs projected length.

Reference globe

Yellow = GK central meridian. Click to pick.

Cities

Readout

Gauss-Krüger is ellipsoidal TM with k₀=1, not UTM (k₀=0.9996). Changing λ₀ recomputes coordinates. Both projections are conformal: Tissot circles stay round; distortion is in radius (scale).

φ

60°