approx. 28mm or 1 - 1/8 inch when measured from the center of the hole in the minute hand to the tip.
For modern cuckoo clocks which use the brass bushing in the minute hand (included)
Will not fit older style cuckoo clocks which used a square hole in the minute hand itself
If your clock hands are missing, measure from the hand shaft to the outer edge of the III to determine the length you need.
Cuckoo white celluloid hands with the bushing. Size indicates length of the minute hand, from the center of the hole to the end. This is approximately half the dial diameter.