It would appear that a special mounting bracket is required for a Universal Carrier installation.
The Packing Piece No.1 (wood, rubber, bakelite) and a Seating Plate Metal are required. These are fastened to the Variometer with 3 screws ( the 3 holes are visible on the underside of the Variometer case)
The problem is how to fasten this assembly to the vehicle as you can not reach the mounting screws once the Variometer is attached to the plate assembly.
A Brackets, Metal, Mounting, Variometer No.C1 (ZA/Can 1376) is required to mount it to the Vehicle.
This bracket is just visible as the hashed line behind the Variometer in the picture you posted.
Geoff
You need items 2, 27 and 28
