Repeatability of microswitches

Hi, all

I'm working on a mill CNC conversion, among other things, and
am wondering about the best way to do the 'home' switches.

Are microswitches repeatable to a few thou or better, or would
something else be better (photo interruptor, or hall effect ?).

Thanks for any input,

Best regards,
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Spehro Pefhany --"it's the network..." "The Journey is the reward"
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Embedded software/hardware/analog Info for designers: http://www.speff.com
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