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The switch board instruments
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The switch board instruments
1). Should be mounted in vertical position
2). Should be mounted in horizontal position
3). Either (1) or (2)
4). Neither (1) nor (2)
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Switch board and Panel Instruments:
- Measuring instruments for switch boards have a square or a rectangular front.
- The pointers and scales for these instruments should be so that the position of the pointer is conspicuous, the scale markings are legible and there is contrast with the background
- Pointers are usually broad or carry broad targets as their ends
- Aluminum strip or tube is used for making pointers
- The scale is generally printed on the enameled surface of a metal plate or on paper or card board pasted to a metal plate
- These types of instruments should be mounted in vertical position
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