As long as it has IR Fit
Generator /Alt
Radio's / Nav aids
AI
Ball (inclinometer)
Clock
Altimeter
Rate of turn indicator
DI
DME
and up to date checks on the following that should be it
VOR test (by pilot every 30 days)
Altimeter checks by engineer every 24 months
Transponder check by engineer every 24 months
ELT check every 12 months
Static system check every 24 months
Unless someone knows anything else ?
Hope this helps