Very easy to install. Harness is clearly marked. Instrument worked first time. The instrument is intuitive and easy to use.
- Customer
William F. from Maryland
- Aircraft
Mooney M20C Ranger
- EI Instrument
8am–4:30pm PST M–F
Open Now
A-102 Adapter Plate
A-102
$28
Lead Time: Usually ships within 2–3 business days.

Very easy to install. Harness is clearly marked. Instrument worked first time. The instrument is intuitive and easy to use.
Easy install and great gauges. Previous experience showed that EI’s units were… great prices and even better instruments. Being able to install the gauge as a primary instrument was a major plus.
[I chose EI because they offer a] certified replacement vs. back-up only and they look great.
Your customer service is excellent and your products are top quality!
[I chose the CGR-30P because of its] ease of use.
Phone service for ordering was quick and easy. Shipping was quick.
Good support when we called with particular questions with the initial setup. We liked the functions and the price.
The CGR-30P is working great and it’s an outstanding addition to our avionics package.
Great product. So easy to read compared to the originals.
E.I. Always Exceeds Expectations!
Works Great! Getting used to menu the more I fly — Nice addition to airplane.
Very accurate readings! The “analog” style LED arc means at-a-glance tach readings that allow the pilot to keep his attention where it matters, not reading a gauge. The digital readout is great for maintenance checks and mag drop tests.