Speedometer & tach repair

[Normk]

From time to time someone asks about repairing or recalibrating a speedometer or tachometer but the subject is broader than my enthusiasm for describing the processes. Translation: "I know how to do this stuff but am too lazy to write it down."

Here's a link to an excellent article on servicing Brit car tachs and speedos which is very comprehensive and much better than what I could produce:

http://home.comcast.net/~rhodes/speedo.pdf

Hope it is helpful to someone.