According to the spec sheet in the pictures, the 1/4" drive is measured in inch-pounds and not foot-pounds like the 3/8" and 1/2" models are. The correct ranges in Nm is:
1/4" is 4.4Nm to 22.6Nm.
3/8" is 27Nm to 135Nm.
1/2" is 40Nm to 216Nm.
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Reluctant beat me to it…1/4” drive is inch pounds of torque.
Did the people who wrote this work on the Mars Climate Orbiter?
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Is this torque wrench as good as the Craftsman model 1019 Laboratory Edition Signature Series torque wrench. The kind used by Caltech high energy physicists. And NASA engineers ? 
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In case they don’t know: Dripping Faucet Scene 
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