There are 8 cutters (excluding the rare half sizes) that will cut gears from 12 teeth through to a rack (infinite diameter).
The cutter shown has markings that show it is a10 DP (diametrical pitch) cutter that it cuts gears from 26 through to 34 teeth,It will cut gears with teeth giving the gear a 14.5 degree pressure angle.
Involute gear is a kind of commonly used gear in industrial equipment
thanks for sharing this useful knowledge.Although we seldom use Involute gear cutter