Definition that contains librate
- sundial timepiece that indicates the daylight hours by the shadow that the gnomon casts on a calibrated dial
- vernier a small movable scale that slides along a main scale; the small scale is calibrated to indicate fractional divisions of the main scale
- reaumur thermometer an alcohol thermometer calibrated in degrees Reaumur
- vernier scale a small movable scale that slides along a main scale; the small scale is calibrated to indicate fractional divisions of the main scale
- centigrade thermometer a thermometer calibrated in degrees centigrade
- fahrenheit thermometer a thermometer calibrated in degrees Fahrenheit