Steve, thanks for asking for details of my Cambridge system
See below (from memory as glider sits in winter storage)

What software version is the L-Nav? *Does it have a temperature probe,
g-meter, etc?
Latest software version available but LNAV does not include
external temperature probe or G-meter
Which size vario display? *2.25 or 3.125?
Vario display is 3.125" or 80mm
Providing a program with the 1550? *GNII maybe? *Or, just the 1550.
Yes, GNII version 3 is included
Recent calibrations on the GPS Nav or L-Nav?
Gary Kamerer updated and calibrated in 2010
Software version in the GPS Nav? *Display version?
Latest version of both

Fernando Silva ('FS')
404-229-3669