Ok. Be my guest.
You need to open my file in GIMP. It is free software. For those, who did not use GIMP before:
1. You can can make certain Layers visible by clicking on an "eye" symbol on the right.
2. Square frame around the fan also could be switched on and off, depending on your panel design requirements
3. You should do 16 Export as .PNG for every frame of the Gauge, switching additional Layers one by another. At the end you will get 16 files as below.
4. The output of the above would be 1204х1206 frame. Now you can use any simple editors, available at your PC, to resize those pictures to the size you need
5. Don't forget - you can change color and transparency of Layers, if you disagree with my color choice
Enjoy and good luck.
Fan-work.xcf