R8100C Heavy-Duty Pencil Pressure Gauge

The R8100C targets the 20 to 120 psi range common on trucks and buses, sitting between light passenger pressures and the extreme high end covered by other gauges in the commercial lineup.

Its extending scale mechanism works the same way as the rest of the pencil gauge family — press it onto the valve stem and read the pressure directly off the calibrated markings that slide out — keeping operation simple even for drivers unfamiliar with digital tools.

This range makes it a solid everyday gauge for fleets running standard truck and bus tires, giving maintenance staff a dependable, no-frills way to spot-check pressure during pre-trip inspections or routine yard rounds.