Fuel Sender Ohm Convertor

[aussiblue]

I just remembered I also have this that I haven't used for decades (well at least many years before I passed the EH Holden Panel Van that I inherited from my grandfather via my father) onto my nephew. It is in a Litchfield Tool Labelled Cardboard Box but Googling it today by the tag on the Box suggests https://i.ebayimg.com/images/g/ndQAA...ttA/s-l400.jpg it is an OTC tool sold by John Deere but perhaps like John Deere Litchfield also sold it. The plastic Case has a "Serviceguard" Label on the front and what looks like a thermal printed label "JT01633". Very similar to the VDO tester. It could also be used to work out what the value of and additional resister connected in series would need to be to make a gauge work correctly. I know it is going a bit off topic but I thought I would post as it might be helpful for anyone with similar issues to the original OP.

BTW I had to add an inline resistor to the temperature sender in my NB Fairlane as being a prototype with a unique prototye dash cluster and temp sender, I could not get a replacements sender that would work with the gauge so it was a matter of playing with a laser thermometer and my resistance wheel to get it all working; I could have perhaps also have similarly used the Serviceguard calibrator if I had thought of it.