Working on a circuit board is delicate work requiring a high degree of precision. One of the best ways to make sure the board stays right where you want it is to use the Aven Adjustable Circuit Board Holder. Also known as a breadboard, this holder measures 6 inches in width by 12 inches high. The holder clamps onto the sides of the board holding it in place. You can rotate the board to a comfortable angle before locking in place.