On 6/12/2010 9:54 AM, Mxsmanic wrote:
Here's a picture of the gauge with the mystery bugs:

http://www.mxsmanic.com/gauge.jpg

Available from Sporty's:
http://sportys.com/PilotShop/product/12626

Peel and Stick Bugs
These reminder bugs, available exclusively from Sporty's, are the best
insurance against error for any pilot. A quick and accurate visual
reference helps maintain critical air speed or altitude. Fast and simple
to install–just peel off the paper backing and press it inside the
bezel. Indicators consist of a thin track that installs inside the bezel.

Altitude Bugs
Altitude Alert Indicator marks critical altitude levels so they can be
maintained by quick visual reference. In the track are three tabs that
move simultaneously: green tab points to 500' above DH or MDA, yellow
tab points from 200' to 100' above minimums and red tab is placed at DH
or MDA. An added safety margin for approaches, it will also help sharpen
your skills. Altitude Alert Indicator 2 7/8" dia.