The hardened, ground and lapped 63/64"-bore spindle ran in what were described as: "special hard bronze cylindrical adjustable bearings with hardened and polished journals Ring Oil lubricated." Although of parallel bore each bearing had a tapered outside and, when drawn into its tapered socket by screwed rings, was closed down slightly on the spindle. The makers claimed that, before final assembly, each spindle and its bearings were subjected to: "careful testing after running for long periods at 2500 rpm".

Tailstock cut-out to expose the barrel graduations

Catchplate and standard collet