HTO-1021 | Tool: 1″, CSC-3000 Calibration Panel

CSC-3000 series calibration panel tool, 0-1 inches wc range (CSC-3011, CSC-3017, CSC-3021, CSC-3023). The narrower range (compared to the HTO-1022) provides greater calibration accuracy for compatible controllers. See also the “universal” HTO-1032.