and i love this about assembling the shutter:

The main design of the shutter is in no way basically

changed; only slight modification of various components to

suit the new assembly. In the assembly of the shutter fast-

range escapement one component after another was tried till one

was found that worked in a fairly satisfactory manner and then

various minor alterations were made to it by filing, and in

some cases, a light tap with a small watch-makers hammer. The

skill of the operators was undoubtedly the chief asset in the

efficient assembling of this shutter.