What is the name of the hand rest used by painters?

A mahl stick is a painting aid used by artists who want to avoid the shoulder, arm, and hand pain that can result from years of standing while painting at an easel.

It is used when painting detail or to avoid smudging wet paint when painting in a large area. It can be laid across your table or easel at an angle or rested on the canvas edge or a dry spot of canvas. Whatever position you choose, it can be a welcome armrest.

Good models are made from solid oak with a soft leather cover.