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Изменения к шагу №4

Отредактированно robertcbaruch -

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Шаг Линий

[* black] Turning the zeroing crank counterclockwise sets the counter digits to zero, while turning it clockwise sets the accumulator digits to zero. Amazing!
[* black] Nelson White's 1920U.S. patent [http://www.google.com/patents?id=lARhAAAAEBAJ|Zero-setting mechanism]"[http://www.google.com/patents?id=lARhAAAAEBAJ|Zero-setting mechanism]", filed in 1920, describes how this amazing thing works.
[* black] This amazing thing practically never works properly on calculators after half a century of neglect.
[* black] On the right side of the carriage, unscrew and remove the zeroing crank. Hold the crank while unscrewing.
[* black] Nelson White's 1920U.S. patent [http://www.google.com/patents?id=lARhAAAAEBAJ|Zero-setting mechanism]"[http://www.google.com/patents?id=lARhAAAAEBAJ|Zero-setting mechanism]", filed in 1920, describes how this amazing thing works.
[* black] This amazing thing practically never works properly on calculators after half a century of neglect.
[* black] On the right side of the carriage, unscrew and remove the zeroing crank. Hold the crank while unscrewing.
[* red] 4-48 machine screw, 1/4"
[* red] Zeroing crank

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