Show unit of number in a display menu

I’m tinkering around with an OLED and the display menu component and I can’t find a workaround for getting a numbers unit to show in the menu behind its value. Is there any way to achieve this?

I use this method to show a temperature with unit:

it.printf(64, 17, id(font_arial12), TextAlign::TOP_CENTER , "%.1f°C", id(garage_temperature).state);