The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
- Customer
Daniel N. From California
- Aircraft
Cessna 175 Skylark
- EI Instrument
8am–4:30pm PST M–F
Sorry, We’re Closed
A-102 Adapter Plate
A-102
$28
Lead Time: Usually ships within 2–3 business days.

The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
Easy to install, and the CGR was set up to my aircraft’s exact specifications.
Compact, precise, awesome!
I have been flying with EI instruments for over 20 years. I purchased the CGR-30P to update my engine instruments into one modern package.
EI tech support is the best.
Always a pleasure to do business with EI. Products ship rapidly. I have been using your products for 20+ years.
We love our MVP-50P w/ its crisp, intuitive display and ease of operation.
[The EAC-1] looks great running… The wiring harness was very well fabricated. Installation was easy- fit perfectly in an existing hole in panel. The brightness of the display is excellent.
Have had EI instruments in my past plane and current plane and they always performed flawlessly.
[Customer service] is great!
Your sales and support teams are very helpful.
Sales reps have been very friendly and helpful.