Characteristic：
The visual target, method of manual measurement, easy to use.
The main technical parameters
Measurement mode: optical rotation
Source: Sodium Lamp + filter * *, wavelength 589.44nm
Measuring range: - 180 DEG
Dial value: 1 degrees
Dial vernier reading: 0.05 degrees
Loupe magnification: * 4
Tube: 200mm, 100mm
Power supply: 220V + 22V, 50Hz + 1Hz
Instrument size: 540mm * 220mm * 380mm
Quality: 5kg
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