Included dice are three-sided dice (d3) that have shapes similar to four-sided dice (d4). For each die after rolling the result is what will be seen at the top of the die.
Those are standard dice used mostly in games that need d3 dice! If you're looking for other standard dice, please check my main project printables:346350-dice-set.
font: Arial 12 (4.5 mm) (based on the link, by purchasing Windows Operating System I have a right to even sell objects with this font, “as long as it's not the font itself”)
‘1’ (number one) is replaced with ‘I’ (capital letter from ‘i’)
comment to standard: ‘1’ can be easily confused with ‘7’ in some fonts
if numbers 6 (six) and 9 (nine) occur ‘6’ (number six) is replaced with ‘6.’ (a dot following number six) and ‘9’ (number nine) is replaced with ‘9.’ (a dot following the number six)
comment to standard: ‘6’ can be easily confused with ‘9’
numbers are extruded by -0.404 mm ("Original Prusa print profiles always use 0.20 mm as the first layer height." (based on the link) which will make numbers at minimum 2 layers)