Dial Torque Wrench
What unit of measurements is read on a dial torque wrench ?
The unit of measurements on a dial torque wrench is either foot pounds (usual on large wrenches), inch pounds (usual on smaller 3/8″ drive wrenches) or Newton/Meters (metric, either size). Some will have readouts for both ASE and Metric.
How do you use a dial torque wrench?
Let’s say that the unit of measurements is Newton meters and inch pounds.
You need to set the dial opposite of the desired reading, meaning if you want 200 inch pounds, set the dial at -200 inch pounds, when you are tightening the bolt or nut the pointer will then return to zero which is much easier to see at a glance than a particular number.
How do you set a click type torque wrench?
Let’s say we have a click type torque wrench and by turning the dial on the bottom of the handle we can set the desired torque.
The numbers on the handle are:
840 960
600 720
360 480
120 240
The numbers on the dial are:
0 8 6 4 2 0
The dial numbers are in steps of 2 for the rating stamped, the top pf the rotating circle indicates the set torque by resting on the scored part of the tree where the numbers are stamped. It’s rated in inch pounds. 120 in/lbs = 10 foot pounds, 240=20 ft/lbs- to convert the torque to ft/lbs, just divide by 12. or to convert to the torque you need, multiply your foot-pound requirement by 12. say you need 50 ft/lbs. 50×12= 600 in/lbs.
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