REPLACEABLE PARTS: Gauge and valve cartridges can both be replaced. (Milton #507 and #512 for all 500 Series Milton window inflator gauges).
ACCURATE: Performance-tested and calibrated. Measures pressure in pounds per square inch (PSI, range: 10-60, increments of 2 lbs.). Can also measure pressure in kilopascals (kPa, range: 80-840, increments of 20) upon request.