G1.9 Dimensional units
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When specifying a dimension (e.g. in a footprint name) the units must always be provided:
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3mm
- millimeters -
1in
- inches
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When specifying multidimensional units (e.g.
length
xwidth
xheight
) then the units only need to be appended once-
3x4x7mm
- 3mm x 4mm x 7mm
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Metric units are preferred, where appropriate
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Linear dimensions should be specified in millimeters
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Angular dimensions should be specified in degrees
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Temperature should be specified in degrees Celsius