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Products & Services   Drilling Instrumentation HDI 100 Mud Gauge HDI 2000B Panel Gauge HDI 2021 4-20mA Transmitter HDI 2100 Stroke Counter HDI 2200 Choke Position Indicator HDI 2300 Cement Gauge HDI 2400 Pressure Gauge HDI 3300 Temperature Gauge HDI 9000 Choke Control Console HDI instrumentation is "field-proven" in the oil and gas industry Easy to read for safe and efficient drilling and well service operations Faster washout and kick detection Improved safety from eliminating pressurized hydraulic fluids in the gauge head Continued operation under freezing conditions Replace Hydraulic Relics with "Field-Proven" Technology! Click here for the HDI 100 The Ultimate Mud Gauge