I would go for a more compact digital option. You will be placing the probe on the spark plug and then installing the plug with the probe beneath it.
I would suggest this or similar. I am unsure what availability you will have overseas. https://www.treatland.tv/trail-tech-digital-temperature-gauge-in-BLACK-p/trail-tech-722-et3.htm
They also sell the TTV now which includes a powered backlight.