Gemmological Refractometer
In the various observation method of gem stone, the measurement of refractive index is the most reliable one for the identification of gem stone. Designed in compact, provided of shield cover to make measurement part to dark room and measured with day light. this instrument identifies gems accurately with apeed and ease at everywhere. Also, accessaried with polarizing filter, birefringence dispersion of gems can be observed and measured. Provided with wide measuring range of refractive index from nD 1.30 to 1.81, the most of gem stone can be observed and measured.
- Refractive Index Measuring Range: 1.330 - 1.810
- Minimum Scale: 0.010
- Measuring Accuracy: +/- 0.002
- Accessories: Polarizing Filter, Contact Liquid (monobromo - naphthalene), Storage and carrying case.
Storage and carrying case
Polarizing Filter, Contact Liquid
Left: 160M, Right: 160LED
Model number |
Type |
List price |
160M |
Standard type |
78,000 yen (excl. tax) |
160LED |
With Build-in LED lamp type |
90,000 yen (excl. tax) |
D-line monochromatic filter (591 nm) built in for No.160M
D-line LED (591 nm), with 3 pcs of button batteries (LR 44) built in for No.160LED