There is a tape measure with a range of 2m. Please design a simple way to estimate the distance from your home to the school and write specific steps

3 answer

It is not easy to cut a steel tape

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Careful not to pierce the pressure hole, the pressure sensor can continue to use?

3 answer

Which kind of water meter is more convenient for large-scale projects? The best engineering case can refer to

3 answer

What is the green area of the pressure gauge on the extinguisher?

3 answer

Why is in the gas flowmeter type to a security gate

3 answer

Do not use oscillograph, how can you measure pulse transformer to be good or bad?

3 answer

Why is there a position sensor and a pressure sensor for the brake pedal of the car?

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Is the pressure meter the same as the pressure meter?

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What are the steps to measure the insulation resistance of a lightning arrester?

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What are the main measurements of an electromagnetic flowmeter?

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Y-100 what is the thread of the pressure gauge?

3 answer

Matters needing attention in carbon sulfur analyzer

4 answer

What flowmeter is used to measure compressed air?

3 answer

What are the detecting methods and techniques of grounding resistance?

3 answer

What does the condensing pressure gauge in the refrigeration system measure?

3 answer

What is the principle of ground resistance meter and its measuring method?

3 answer

The difference between mono and three channel ultrasonic flowmeters is the transducer

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Water meter rotation, turn off the valve will not turn, but did not find leakage

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Will the water meter go slow when it's safe?!

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How to measure current clamp meter

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The inlet pressure sensor and the intake temperature sensor are not the same

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Seismic pressure gauge how gas?

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Where is the backflow preventer installed?

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What is the range of temperature measured by thermocouples and thermal resistance?

3 answer

What's the use of Spectrum Analyzer?

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How to measure small resistance with magnetoelectric instrument?

3 answer

What is mass flow meter?

3 answer

What does smart water card always show "off"?

3 answer

Laboratory equipment during the test

3 answer