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Specific Gravity (D 20/20 °C)
The user-interface of the Digital Honey Refractometer consists of two buttons and is both intuitive and easy to learn
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The BOSS Brine Professional Grade portable Salinity Refractometer comes in a foam-lined hard case
and easy to use
Noyes AFL Communications OPM4 Optical Power Meter Duplex II Specific Gravity (D 20/20 °C)Noyes AFL Communications OPM4 4C Optical Power Meter Refurbished OPM 4 series optical power meters may be used to measure optical power in premises, telco, or broadband fiber optic networks. When used with an LED or laser light source, the OPM 4 can also measure the attenuation (insertion loss) of multimode or single mode cables. Simple to use, the OPM 4 stores reference settings for each calibration wavelength. An easy to read LCD display shows
