Equipment for Airworthiness

Required for VFR flight 91.205(b)

Tachometer (for each engine)
Oil pressure gauge (for each engine using a pressure system)
Manifold pressure gauge (for each altitude engine)
Altimeter and airspeed indicator
Temperature gauge (for each liquid cooled engine)
Oil temperature gauge (for each engine)
Fuel gauge
Landing gear position indicator
Anti-collision lights
Magnetic compass
ELT
Safety belts