Thimblette

Thimblettes (also known as rubber thimbles and finger cones) are soft thimbles, made predominately of rubber, used for primarily for leafing through or counting documents, bank notes, tickets or forms. They also protect against papercuts as a secondary function. Unlike thimbles, the softer thimblettes become worn over time. They are considered disposable and sold in boxes. The surface is dimpled with the dimples inverted to provide better grip. Thimblettes are sized from 00 through to 3. A common improvised alternative is to moisten ones thumb with a lick.

Sources

*http://www.bandit.co.uk/Thimblette.htm