Figure 10-73.  Typical turbine engine instruments. 10-57 OIL PRESS PSI 80 100 0 40 60 20 FUEL FLOW 1 2 3 7 9 12 0 5 EXT GAS TEMP 5 4 3 2 1 0 6 7 9 10 8 PSI TORQUEMETER 200 0 100 50 150 PERCENT RPM 50 40 30 20 10 0 60 70 90 100 80 °C OIL 5 4 150 -50 100 0 50