NEW CURV-O-MARK STANDARD CENTERING HEAD

Curv-O-Mark Centering heads aid in the setting of centrelines, establishing angles and marks for butt-ins, location points inside pipes and tanks, laying out keyways and measuring declivity.
The standard model is used on pipe 1/2-inch diameter and larger.
It has a 4-inch Y-type head and is fitted with an adjustable dial bubble protractor (DSL) and a manually operated hardened centering pin.

To quickly and accurately locate the center point on a pipe, shaft or other cylindrical surface, first set the protractor dial at zero, then place the centering head in the vicinity of the highest point of the cylindrical surface.
Move the centering head across the surface until the bubble is centered,
then strike the centering pin a light blow, the resulting indentation will be top dead center.
If the desired center is at some angle away from top dead center,
mereley set the protractor dial to the appropriate degree mark to the right or left of zero and then move the centering head around until the bubble is centered, at that point make the indentation.