... to insure a good seal. 5. Hold in place for about 3-4 seconds, remove and note reading. 6. If the pressure ... you prefer: Mm or in. *Auto power off. Note: 1. Put this Digital Tyre Gauge near by hand in your car. 2. Usually, do not ... , etc (4) Machinery------Metal Working Machines, Woodworking Machines, Shear Bending and Rolling Machine, etc Rolling Machine, etc