CROSS WORD PUZZLE SCIENTIFIC INSTRUMENTS AND THEIR USES

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Across
  1. 3. measuring of rain
  2. 4. properties of light
  3. 5. speed,velocity of a vehicle
  4. 6. electricpotential,voltage
Down
  1. 1. specificgravity of milk
  2. 2. electrical power
  3. 5. radius of a sphere
  4. 7. temperature