Analog VOM Meter Face Scales Explained

What are the two types of scales that are printed on the meter face of an analog VOM? Linear and non-linear scales.

When looking at the meter face of an analog VOM (Volt-Ohm-Milliammeter), you will notice two types of scales printed on it – linear and non-linear scales. These scales play a crucial role in helping users accurately measure voltage, resistance, and current.

Linear Scales

Linear scales are the most common type of scales found on the meter face of an analog VOM. These scales are evenly spaced and provide a linear relationship between the measurement value and the position of the pointer on the scale. For example, if the voltage being measured is 5 volts, the pointer will align with the 5-volt mark on the linear scale.

Non-Linear Scales

Non-linear scales, on the other hand, do not follow a linear relationship between the measurement value and the position of the pointer. These scales are used in situations where the measurement values are not evenly spaced or distributed. Non-linear scales may be used to measure values that increase exponentially or follow other non-linear patterns.

By having both linear and non-linear scales on the meter face of an analog VOM, users can accurately measure a wide range of values across different applications. It is important to understand the characteristics of each scale type to interpret measurements correctly and ensure the safety and efficiency of electrical equipment.

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