Figure 1. GM70 parts 1 MI70 indicator 2 Charger socket 3 Connector ports I and II for probes and cables 4 Probe GMP221 or GMP222 5 Probe fastener 6 Handle GMH70 7 Adjustment button 8 Gas outlet 9 ON/OFF switch 10 Gas inlet 11 Measuring chamber 12 Probe GMP221 or GMP222 13 Probe connector 14 Connector to the MI70 indicator