Product Name: PolarimeterModel Number: WXG-4Place of Origin: ChinaFeatures:1) Visual aim, manual measure, easy operation2) Measuring range: -180 ~ +180°3) Minimum value in reading: 0.05°4) Acc

Polariscopes are used to quickly and easily check if gemstones are single or double refracting, very useful in identifying moissanite and detecting strain in diamonds and other gems. Polariscopes are

Polariscopes are used to quickly and easily check if gemstones are single or double refracting, very useful in identifying moissanite and detecting strain in diamonds and other gems. Polariscopes are

Product Name: PolariscopePlace of Origin: ChinaPolariscopes are used to quickly and easily check if gemstones are single or double refracting, very useful in identifying moissanite and detecting strai

Product Name: Portable Dial Gem GaugeModel Number: dial gem gaugePlace of Origin: ChinaSpecifications:1) Measuring range: 0-12mm/0-0.52) Resolution: 0.01mm/0.00053) Accuracy: ±0.02mm/±0.

The TDR series are the top model at good price in the market now, named Table Digital Refractometers. The instrument can be designed with 5 different scales. We can add any scale according to our cust

This model is specially designed to measure the refractive index in the mineral oil or in the Brix solution. But its measurement range is small, it only can be sued to measure the oil or Brix solution

Product Name: Refractometer for Oil TestingModel Number: RND-025, RND-026Place of Origin: ChinaThis model is specially designed to measure the refractive index in the mineral oil or in the Brix soluti

The kinds of gem can be precisely determined in accordance with the measured value of refractive index because every kind of gem has its inherent refractive index. Besides, index of double of refracti