The knob with numbers and directional arrows on it shown below is used on refrigerators to control

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The knob with numbers and directional arrows on it shown below is used on refrigerators to control temperature. In which direction, clockwise or counterclockwise, would you turn the knob to make the refrigerator cooler? Why? How would you improve the control to avoid confusion?
3 COOLER WARMER
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Niebels Methods, Standards and Work Design

ISBN: 978-0073376318

13th edition

Authors: Andris Freivalds, Benjamin Niebel

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