Layer scales

Give one layer its own scale when part of a sheet is drawn at a different one.

A layer can carry a scale of its own, which replaces the page's scale for everything measured on that layer.

It exists for the sheet that holds more than one scale: a plan with an enlarged detail in the corner, a profile beside a plan view. Put the work belonging to the odd-scaled area on its own layer, give that layer the right scale, and both parts of the sheet measure correctly without splitting the page.

Set one: open the layer's settings from the layer list in the Materials or Utilities panel. The editor there is the same one page settings uses, presets, calibration and all. See Setting a scale.

It replaces, it does not combine

Where a layer scale is set, the page's scale is not consulted at all for that layer, so the layer's scale has to be the true scale of what is drawn there, not a correction applied on top of the page's.

Layers without their own scale keep using the page's, so setting one layer's scale never disturbs the rest of the sheet.

Notes

• A layer scale is invisible in the measurements it produces: a quantity taken at the wrong layer scale looks exactly like one taken at the right page scale. If one layer's numbers are consistently out by a neat factor, its own scale is the first place to look.