MCQOPTIONS
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| 1. |
Which of the following is not a second order instrument? |
| A. | Mercury in glass thermometer with covering |
| B. | Bare mercury in glass thermometer |
| C. | Pressure gauge with one bellow, two tubes and a tank |
| D. | None of these |
| Answer» C. Pressure gauge with one bellow, two tubes and a tank | |