Interesting instrumentation

[RalphInCA]

What are the 2 instruments to the right of the Sandel HSI, below the altimeter, and the one below the Argus 5000?

 

[Gucci Pilot]

The one below the altimeter looks like an altitude alerter.

 

[bkspero]

The instrument below the Argus 5000 is an EI CGR-30P engine analyzer/tachometer/multi-function instrument.

 

[nauga]

The other one (below the altimeter) is a Rocky Mountain Micro Encoder, a kit-built altitude encoder that's long gone.

Nauga,
with stone knives and bearskins