We always sell 3 1/8" mechancial instruments, such as ALT, ASI, VSI,
GYRO in global market. With global homebuilt/experimental aircrafts,
there are one third aircrafts which installed our instruments.
We want to know whether pilots like 2" or 2 1/4" ALT, ASI, VSI. They
are very important for us to develope miniature mechanical aircaft
instruments.

Thanks in advance.

Luo
http://www.ming-da.com