Table saw

A table saw comprising:

• a base;
• a table supported by the base, the table having a workpiece supporting surface;
• a blade extendable through the table and above the workpiece supporting surface;
• a rail connected to at least one of the base and table, the rail being below the workpiece supporting surface and having indicia on a top, surface thereof;
• a fence assembly supported by the rail, comprising:
• a fence beam;
• and
• a fence head connected to the fence beam and disposable on the rail, the fence head comprising:
• a main body disposable on the rail and having a hole allowing the indicia to be seen therethrough;
• a rod having two ends and rotatably connected to the main body;
• a first cam disposed at one end of the rod;
• a second cam disposed at the other end of the rod;
• a handle connected to the rod, where movement of the handle causes rotation of the cams;
• a first movable plate contacting the first cam, the first movable plate being movable between a first position contacting the rail and a second position not contacting the rail, and
• a second movable plate contacting the second cam, the second movable plate being movable between a first position contacting the rail and a second position not contacting the rail;
• wherein the first and second movable plates are separate;
• the fence head being coplanar with or below the workpiece supporting surface when disposed on the rail, allowing a workpiece to move past the fence head and rail when the workpiece moved towards the blade.