The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation. Each scale is temperature compensated.PSU - The newest type scale standard – Letters stand for Practical Salinity Units and is fast become the universal standard for seawater measurementPPT - The old standard of Parts Per Thousand of saturated salt. This is the oldest of the 3 seawater measurements scalesS.G. - The current standard of Specific Gravity hydrometers and refractometers. The Milwaukee Instruments MA887 digital refractometer is easy to calibrate and easy to read and provides highest accuracy possible for the measurement of seawater 3 specific scales. This is the type of accuracy demanded by today’s professionals and Milwaukee Instruments delivers. MILWAUKEE DIGITAL SEAWATER REFRACTOMETER SPECIFICATIONS: Range Resolution AccuracyPSU: 0-50 1 +/- 2PPT: 0-150 1 +/- 2S.G.: 1.000 - 1.114 0.001 +/- 0.002Temp: 0-80C / 32-176F 0.1 C/F +/- 2 0.3 C/ +/- 5FCalibration: Automatic
