Maintenance instructions
1. Kindly remember to switch it off after finishing the measurement to extend the lifetime.
2. Never apply voltage (e.g. engraving with an electric pen) on any part of the digital outside micrometer for fear of damaging the circuit.
3.Clean the measuring surface of the digital micrometer with dry and clean cloth (or soaked with cleaning oil), take the battery out and stock in a dry environment if it stands idle for a long time.