Across
- 4. measures short intervals of time accurately
- 6. works only during the day
- 7. standard unit of length
- 8. weight hung from a string
Down
- 1. quantities that can be measured
- 2. to-and-fro movement about its mean position
- 3. one that is uniformly used by everyone
- 5. instrument used to give distance travelled in kilometers
- 6. distance covered by a moving object in unit time