... most practical tire pressure gauge. DCC-142A:four display units: PSI,KPA,BAR,KG/CM²DCC-142B: English pronunciationDCC- ... 142C: A display unit: PSIProduct size: 138*40*43mmGross weight: 52gColour: White / Black ... pressure gauge head right, at the hole, pressing 4 , The pop-up scale, will indicate, now the tire pressure.