An easel is an independent structure designed by an artist to hold up a canvas or panel while painting. The easel used in the painting room usually consisted of four hard wooden bars fastened to a square or rectangular base with foot wheels, two strong poles crossed at the top, and diagonal pillars in the middle of the back. There is an adjustable sliding groove, its spring hook can be segmented to secure and support the painting; The top is secured by a movable clip. The sketch easel is made of wood or aluminum, small size, light weight and easy to carry, and all accessories can be folded into a compact volume; It's designed to be somewhere between robust and portable. The most common sketching easel has three legs, two of which stand in front to support the pillars of the painting, while the third leg leans back and sticks out to adjust the Angle of the board or canvas. An easel for a college or art class is stronger than a sketch easel, but lighter than one used in a painting room. Most easels can be folded for easy storage. Wooden easels are also divided into many types, whether the quality of the easel is good mainly depends on whether the material of the wood is good and whether the workmanship of the craftsmen is fine.