Those appear to be two displays of a 3 set combo.. what is missing is the
"I"

They are controlled by an efa 1/3 system manufactured by Blumenauer,
"V"ariometer, "I"nterverometer" and "S"peed to Fly.. the control box is the
dark box with two rheostats on the face below the "V"

Consider the "intervromenter" the Averager. On the control box, the two
rheostats, left is power and speaker volume, the right is the sensitivity,
the switch above the volume selects the audio from the vario or the speed to
fly, and the switch to the upper right selects "wet or dry", at the 3o'clock
position is the McCready setting selector.

We have this system in our LS-4 and it works great.
BT

"chris" wrote in message
ups.com...

What are the 2 types of varios shown in this:

http://www.dg-flugzeugbau.de/Data/ls1-barcelonette.jpg

What do the V & S stand for?