[Bell Historians] Pointy heads

David Bryant david at b...
Thu Jan 15 21:51:43 GMT 2004


> You wait until you read my magnum opus: 'British Standard Whitworth
> bolts used by Day's of Eye 1902 - 1904; head shapes, thread profiles
> and suggested manufacturers; with an appendix indicating probable
> spanner usage based on an analysis of nut markings'.

I trust you won't overlook the possibilities of adjustable spanners,
stilsons or universal sockets. Tha latter may perhaps leave marking from
their pins on the upper face of the nut / bolt.


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