Black Anodized Aluminium Pocket Rocket, PR1000-BA
This is a unique and useful outside diameter caliper that fits right into your pocket (3 1/2" X 7 5/8")
Just set the backplate against a round object so that is touches at 2 contact points, then swing the movable arm until it also touches.
The "READ HERE" edge indicates the diameter
Only semi-circle exposure or less is required tp indicate diameters.
Pipe sizes to 16" are displayed as well as fractional inch diameters from 1/16" to 16".
Included for easy reference is a fraction/decimal chart and a nominal size pipe diameter table.
When the swing arm is at the 180 degree position you also have a 14" ruler.
For use by engineers, draftsmen, pipe fitters, contractors, carpenters, sheet metal fabricators, inspectors, woodworkers, plumbers, etc. Anyone who needs to measure various diameters.
For more information please visit http://www.newmantools.com/gauge/pr.htm