When designing a printed circuit board, which measurement standard do you use?

Forced by legacy...of course I should prefer do away from Imperials..

pienso en milimetros, pero el 90% de los componentes estan en modulos IMPERIAL. y las versiones en milimetros, no se consiguen o son mas caras.

prefiero el milimetro.

I would like to use onle metric, unfortunately most thru hole components are imperial, which makes using metric rather messy.

I prefer using the metric system, because it is the world’s most used system, and the most rational one.
Regards,
Franz

I use only metric system as it's the most popular today, so that I won't face any discrepancy and it's always going to be clear.

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