Answer:
1. Ohmmeter
An ohmmeter is an electrical instrument that measures electrical resistance (the opposition offered by a substance to the flow of electric current). Megohmmeters (also a trademarked device Megger) measure large values of resistance. The unit of measurement for resistance is ohms (Ω).
2. Ammeter
An ammeter (from ampere meter) is a measuring instrument used to measure the current in a circuit. Electric currents are measured in amperes (A), hence the name. The ammeter is usually connected in series with the circuit in which the current is to be measured.
3. Watt meter
The wattmeter is an instrument for measuring the electric power (or the supply rate of electrical energy) in watts of any given circuit. Electromagnetic wattmeters are used for measurement of utility frequency and audio frequency power; other types are required for radio frequency measurements.
4. Ruler
A ruler can be defined as a tool or device used to measure length and draw straight lines. A ruler or measuring tape can be used to measure lengths in both metric and customary units. Here, the ruler is marked in centimeters (cms) along the top and in inches along the bottom.
5. (asan po 'yong pic?)
