I posted this on a couple of other Triumph forums early this year, so some may have seen it already. In the spirit of Kashif's absolutely amazing thread on rebuilding his ammeter, here is a story of rebuilding 40 year old Smiths speedo and tach units.
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http://bullfire.net/Triumph/Triumph34/Triumph34.html
View attachment 8346
http://bullfire.net/Triumph/Triumph34/Triumph34.html