67 Barracuda. how do you get the trip odometer button out?

I picked up that 67 Barracuda dash. Happy to find out it has a 150 mph in it. But I am trying to disassemble it all and I cant figure out how you pop the trip odometer button off. i have it soaking in PB blaster. It has to either pull off or unscrew off. I did a search and couldnt find anything.
neal