2-in-1 watch band /spring bar size measure selector

Fool-proof tool to get proper-size watch bands & spring bars - as easy to use as a ruler
Use notches to measure distance between lugs to get width needed for straps & spring bars
To measure watch bands just match with appropriate slot
Measures mens & womens watches from 6mm up to 24mm, easy-to-read black on white
Flexible thermoplastic with brass grommet