Fluke 89 IV: How to know the knob/switch position?

[EvanShultz]

I have a Fluke 89 IV with the knob removed from the switch. The little while plastic mount for the knob was broken and, since it's pulled out, I don't know how to align the switch and knob. (The meter doesn't work now but eventually I would be able to figure it out...)

It appears that I can find a small screw and use that to secure the two white plastic parts that form the "stem" from the knob. Then I should be able to push the knob + stem back into the switch and everything should be fine. At least, that's my plan so far. Any suggestions here are welcome, but the big reason why I opened this topic is: does anybody know the proper orientation of the knob and switch? I do not know how the switch would be positioned when the knob is turned to "OFF", for example.

[ModemHead]

This is an 87-IV and the switch is in the OFF position.

[psykok]

I contacted Fluke support this morning to know what could be done for my  89 IV

I just got the answer, 87 and 89 serie IV are not under support any more and not eligible for any kind of repair.
In place they offer me to buy a 289 for a discounted price. The price is not bad but unfortunately still too expensive for me.

[EvanShultz]

This is an 87-IV and the switch is in the OFF position.

Fabulous! Thank you!

[EvanShultz]

I finally found the motivation to try and wrap this up. I put the knob and spring-selection-switch part on the front and back of the front cover together with a screw.

It does work, but the knob is a little wobbly and doesn't have the nice, tight, precision feel it should have. So now I have a working meter.

However, it would really be nice to get the proper knob since this is a nice meter. Does anyone know where to look? It appears the Fluke 189 also has the same front cover as the 89 IV. I didn't find it on eBay and I contacted other sellers with covers to no avail. Broken 89 IV and 189 meters are still expensive, and I don't need the guts. Thoughts?

[commongrounder]

I wonder if a replacement for the broken part could be 3D printed? I once took a broken unusual plastic potentiometer shaft to a Maker Place operation. I had them scan the pieces, and they did a great job of printing a replacement. Cost me $20.00US.

[floobydust]

I have seen plastic hex pcb spacers and hex rods at the hobby shops. Maybe measure it and see, if it's a common size like 1/4".
https://www.keyelco.com/category.cfm/keyelco/Spacers-Standoffs/id/495 and McMaster Carr.

It does see a lot of torque so a 3D print might not be strong enough? Or get an 87V part.

[EvanShultz]

Thanks for the suggestions!

I'm not sure a 3D printed part would work either. But good idea.

The problem seems to be that the white-ish plastic hex part is also the indicator on the knob. So the dark plastic of the knob is seemingly an overmoulding. Getting it out and fitting in a hex spacer might be challenging. But it could be worth a shot. Thanks for the suggestion, and I'll use the meter as it is for a while to see how it holds up before trying anything else.