If you are in Karachi, go to Hafiz Jee, if you are outside Karachi, then contact some pakwheelers of Karachi and they can do work from Hafiz Jee and can send you via Pakistan post/ TCS or whatever you want
In Karachi, no shop can do speedometer work better than or even close to Hafiz Jee
Hafiz speedometer repairing Karachi
Shop no.144-A Prime Center M A JINNAH ROAD
MAGAZINE LINE SADDAR KARACHI
0300-2837591
0333-3098291