Is there an approved tyre pressure gauge?
Pump gauge on the Rennkompressor (for high pressure) or Aircon 6.0 (low pressure) is all I use.
As good a reason as any to upgrade the pump.
While I've got your attention, I lent my KCNC pump head out and now the lever won't stay closed: any suggestions (apart from don't lend it out)?
Sound like it might be cam damage, probably only fixable by getting a new lever/cam.
@Scilly.Suffolk started
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Pump gauge on the Rennkompressor (for high pressure) or Aircon 6.0 (low pressure) is all I use.