[T2] where to get a Westach CHT guage?

[Robert Mann]

    My 0–375 Celsius CHT guage has become damaged.  Having taken it apart I
can't see how to fix it.  The NZ agent where I bought it a dozen y ago has
none in stock, so I see no need to deal thru them.  Can anyone point me to
a seller who can be trusted to mail a new one to NZ?
   Westach 2C1-18   input 9.81mV


cheers

Robt Mann
'73 Devon 1600dp