we have all heard of a motometer but how about a oilometer?

I picked up this Bakelite shift knob today. It is a oilometer that helps you keep track of your next oil change with a odometer type setup in the knob that you can remove and change when needed. Very unusual piece that I could not pass on. Now the question is whether I am going to keep it or sell it. Just thought I would share my find of the day.

 

Another view

 

Yes I know this is in the wrong section. It was due to a error with my phone. I am waiting for a moderator to move it.

 

I love that knob. If you were going to sell it, how much would you want, as I'd love it on my Coupe.

 

Please delete. I have reposted in correct section. Sorry.