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The tachometer and speedometer each have three pushbuttons, which allow the different functions of each instrument to be activated. M Mode Button Down Up Button Button CORC113 Sport 4-15 Nautique Sport Sec 4.qxd 11/19/04 4:02 PM Page 16 Section 4 Refer to Standard Dash Pod in this section for additional information on gauge operation. Speedometer / Depth Sounder The Serial Bus Speedometer / Depth Sounder provides both the functions of a speedometer and a depth sounder. The analog speedometer loo