Gem Portable Polariscope with LED lighting

Specification:

The polariscope can quickly determine whether gems are singly or doubly refractive .sometimes ,use the interference figure sphere to view the interference figure spere to view the interference pattern .

Product Description:

1. Black aluminium alloy shell.                                

2. Diameter of polaroid: 30mm.                                      

3. Rotation type sample room

4. Long life white LED cold light source.                                     

5. Build-in 3V button type battery

6. Leather sheath packaging