What is the Classification and Usage of Thimble

Classification of thimble:

The extraction thimbles are divided into three types according to different materials. Three kinds of filters commonly used in the world are cellulose extraction thimble, glass fiber extraction thimble, and quartz fiber extraction thimble.

Usage of Thimble:

A thimble is an object used to protect the finger and push the needle through the fabric or leather when sewing. The earliest known use of the word is 15th century, but the word is Old English in origin, and related to the word for thumb.

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