DGM-SK25RM-QS4
Metric calibration. 1/4-inch quick connect. 0.3-2.5 LPM range
Call and ask for calibration services for this meter.

DGM-SK25R-QS8
English calibration. 1/2-inch quick connect. 0.35-1.24 CFM range
Calibration Service for this Meter is: DGMC-15A-HF

DGM-SK25RM-QS8
English calibration. 1/2-inch quick connect. 10-35 LPM range
Calibration service for this meter is: DGMC-15A-HF