I wanted to have a mini voltmeter for quick measurements and polarity checks. With 1x1 Gridfinity footprint (credits to Zack Freedman) it's easier to access than my big one. 

• Printed with 0.2 mm layer height.
• Any filament can be used
• Clearance is designed to hold the parts in place without glue
• The screw holes of the circuit board need to be removed 
• To hide the voltmeter nicely (see photos) print the closed top plate in a bright color - ideal white
• To further improve the look you can grind down the black surface of the voltmeter
• The small opening can be used for header pins 

Other hardware

• [https://www.amazon.de/gp/product/B08T1QYJYT](https://www.amazon.de/gp/product/B08T1QYJYT)
• [https://www.amazon.de/dp/B09Y2TLP8N](https://www.amazon.de/dp/B09Y2TLP8N)