Refractometer
/rɪˌfrækˈtɑːmɪtər/
Definition 1 of 1
Pro Tip 1/3Scientific Tool
Used by professionals like winemakers, not in everyday conversation. 
A chemist might say: 'We'll use the refractometer for this solution's analysis.'
Pro Tip 2/3Precision Instrument
Indicates a high level of accuracy in specialized fields. 
Research labs require a precise refractometer to study liquid samples.
Pro Tip 3/3Measuring Device
Use 'refractometer' when referring to measuring refraction, not weight or volume. 
While a scale measures weight, a refractometer measures refraction.