Abstract: A modular adjustable vise is provided. The modular adjustable vise includes a base and a plurality of vise units mounted to the base. The plurality of vise units are spaced apart. Each vise unit includes a pair of jaws movable toward and away from one another to form an adjustable gap therebetween. Each of the vise units are independently adjustable such that the adjustable gap of each vise unit can be adjusted independent of the gap of the other vise units. A method for configuring a vise is also provided that includes machining a clamping surface of a jaw of the vise unit after the jaw has been mounted to the base.