This adjustment tool is used to set the float height in a Solex carburettor on a Citroën 2CV. The tool helps obtain a constant fuel level in the float chamber, which is needed for stable engine operation. Its fixed shape and dimensions match the float and the carburettor housing. During assembly it is placed against the float to check the correct position. The design allows accurate and repeatable adjustment during service and overhaul. The tool is made from rigid material so it keeps its shape in workshop use and provides a consistent reference for the float setting each time it is applied.
