Series 513 dial test indicator with reversible measuring direction and adjustable contact point, for measuring surface variations in narrow or recessed areas Units displayed in fractional millimeters (mm), and has a rotating bezel and limit markers Horizontal face parallel to the axis of the indicator and three dovetail mounts for mounting horizontally or vertically from the front, top, or back of the indicator Unified outer frame prevents oil and water from permeating the front face, a hard frame body provides rigidity and durability, and a clear, flat, crystal face is scratch-resistant Meets Japanese Industrial Standard (JIS) B7533-1990