The #112-2 is specially designed so that the user can easily set the gauge to zero if needed by simply inserting the provided screwdriver into the stem of the gauge. Turn the screwdriver left or right until the needle is set to zero.
This unit is covered by a five year mechanical calibration warranty. Comes complete with a screwdriver and large nylon zipper case.
Two years against any Manufacturing defects 5 Years warranty on Gauge caliberation