Using a dial to control a slider

Hello! Sorry, I'm really late to the party here - I've never used them, but they'd be perfect for an interaction I'm wanting to make! The user will turn a dial to set the volume of a tube (represented by the slider - it looks enough like a ball in a tube to work!)

Just want to check I'm not missing something obvious - some way to make it better, or to nicely animate the movement...

I'm giving both the slider and the dial 6 points. And setting a trigger for each - 

Set Slider1 equal to 1.00 when Dial1 changes if Dial1 is equal to 1.00
Set Slider1 equal to 2.00 when Dial1 changes if Dial1 is equal to 2.00
etc

Is this the best way to go about it? I'm not really familiar enough with either to know if I'm missing something! Many thanks :) x

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