| 1. Connect (+) batteries to a conclusion of 1 gauge, and (-) batteries with a conclusion 2. (+) a voltmeter conclusion connect to a conclusion 3, and (-) a voltmeter conclusion – with a conclusion 2, according to the scheme. |
| 2. Turn a shaft – the voltmeter should for 1 turn show 4 times the pressure fluctuating from 0 to 11 Century Otherwise the gauge replace. |
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