Patent ID: 7726918

Claim:
A power tool comprising: a base slidable on a workpiece, and an opening provided through the base; a main unit supported to the base and movable in a first direction substantially perpendicular to the base, the main unit including an electric motor; a cutter driven by the electric motor, the cutter being capable of protruding through the opening from the base; a stopper pole supported to the main unit, the stopper pole being movable in the first direction, the stopper pole having one end protruding from the main unit toward the base for abutment on the base for thereby regulating a moving distance of the cutter; a digital display unit including a moving distance detection portion for detecting a moving distance of the stopper pole and a digital display portion for displaying the moving distance; and a dust prevention member provided between a part of the stopper pole protruding toward the base and the moving distance detection portion, thereby preventing dust from entering into the moving distance detection portion, wherein the dust prevention member is a felt member that contacts with the stopper pole.