Thimble Sizing
To get an idea of the size of thimble to order, wrap a string lightly around your finger just before the base of the fingernail, as shown in the sketch below. Mark across both ends of the string in a place where they overlap. Then lay the string along a ruler and measure the distance between the marks. Your measurement may not be exact, but it will give you an idea of the size to order. Look up the measurement in the chart below to arrive at a size.
THIMBLE SIZE
MEASUREMENT IN METRIC
MEASUREMENT IN INCHES
SMALL
42mm to 46mm
1 5/8" to 1 13/16"
MEDIUM
47mm to 51mm
1 7/8" to 2"
LARGE
52mm to 56mm
2 1/16" to 2 3/16"