With the lid removed, the tool can be seen. They are designed to stretch across the hornguides and the central bobbin adjusted to guide a datum bar to represent the axle centre. All should become clearer in later pictures when we come to use them.
With the lid removed, the tool can be seen. They are designed to stretch across the hornguides and the central bobbin adjusted to guide a datum bar to represent the axle centre. All should become clearer in later pictures when we come to use them.
Credit: C.Hopkins, 11 April 2008