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Fixed price repairs are based on the assumption that unit/s received
‘original & complete’... a surcharge may be applied to cover
missing  parts etc...  If in doubt send in the unit for inspection
Good  luck with your project’...  Enjoy your classic motoring...
If  you  found this web site via a ‘search engine’ please
 check that you are looking @ the
latest version... click here
Mileage correction
Other services
Post & packing
Contact details
Rev counters
Jaguar XK 120 ( 1948 / 54 )
Parts Order E-Mail Link
Payment options
Payment options
Payment options
Payment options
JDO Instruments

Classic Car Instrument Repairs ( Est 1963 )
Fixed price repairs for most British & European Classic Car Instruments
48hr service  available... Why pay more & wait longer ! No UK vat
Tele:   01535 603570 / Mobile: 07872 071512
Please check the  FAQ’s page  BEFORE ringing / texting / emailing
Rev-Counters  Repaired / Serviced £105* plus p&p
Most Cable driven magnetic units & Electronic: Smiths / UK-Jaeger / VDO
 Please advise if your car is fitted with ‘A CAPTIVE DISCHARGE IGNITION’  CDI / MSD SYSTEM   

The fixed price quoted is for the repair / service & calibration of a Rev-counter ‘AS RECEIVED’
If you require the unit
Re-calibrating & / or the Polarity changing  due to a change of  engine / wiring etc
A surcharge will be payable depending on the fitted movement... please ask

Please specify: the number of cylinders /  type of ignition ( points OR electronic ) & the cars earth polarity on your order

An  upgrade service  is available for most early Rev-counter’s ( including cable driven units )
to run with either ‘Points’ or
‘Electronic Ignition’ including ‘123 ignition’    surcharge applies

Smiths RVC units can be re-calibrated to suit : ‘Wasted Spark’ ( DIS ) ignition systems e.g. No Distributor   
( a connecting diagram is normally included with all repairs / upgrades etc )
‘Governor’ OR  ‘Chronometric Units’ ( eg. with ‘off-set cable drive’ ) please add 50% surcharge
*Later units that require ‘non standard’ replacement  I/C’s (Electronic Chips) may have a ‘surcharge applied

Please note we do NOT repair DIGITAL DISPLAY  Rev-counters
Jaguar  XKE  or ‘E’-type ( 4.2 )
Rev-counter upgrades
Rev-counter upgrades
Rev-counter upgrades
New Bezels & fitting gaskets
New Bezels & fitting gaskets
Connecting diagrams