The openscad script contains modules to make a wedge of any desired angular width, with a text label embossed into it (of whatever size looks good and will fit)

The STL I've uploaded contains one each of fractions 1/1 to 1/10,  with radius 30mm and height 10mm (not counting the nice alignment gap/ridge that Kuehn designed in).  You'll have to make additional copies of each piece when slicing.

(For those of you using PS2.90 and above, or other slicers with multiple beds, I've found that one good way to work is to move all the pieces to one inactive bed and just move the piece you want to print to the active bed and multiply it. When you're done generating G-code for that piece, move all those bits to another inactive bed so you can keep track.)