Mini voltmeter 4-30 V DC. I printed with a 0.25mm nozzle but it is probably possible to print with a 0.4mm nozzle. It is recommended to use glue for assembly. Dimensions of the module: 24 x 10mm. I ordered it from Temu but I think it is also possible from Aliexpress. It takes up little space and I will carry it in my car, so I printed it from PETG but it is also possible from PLA. No support needed.

[https://www.aliexpress.com/ssr/300000512/BundleDeals2?spm=a2g0o.productlist.main.9.3d0f3289bBkvZG&productIds=1005008926309640:12000047231528027&pha_manifest=ssr&_immersiveMode=true&disableNav=YES&sourceName=SEARCHProduct&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005008926309640%7C_p_origin_prod%3A&pvid=de96f207-b3a3-4c95-a955-4de3afd5e6f3](https://www.aliexpress.com/ssr/300000512/BundleDeals2?spm=a2g0o.productlist.main.9.3d0f3289bBkvZG&productIds=1005008926309640:12000047231528027&pha_manifest=ssr&_immersiveMode=true&disableNav=YES&sourceName=SEARCHProduct&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005008926309640%7C_p_origin_prod%3A&pvid=de96f207-b3a3-4c95-a955-4de3afd5e6f3)