you can determine whether the gem is a Single Refraction (Isotropic) or Double Refraction (Anisotropic or Birefringence) and uniaxial or biaxial photopositive or photonegative
Photo zoom in/zoom out: 5 times max capacity
3-digit LED amplitude display synchronously
Loaded memory card indication on screen
1 x 5M Standard Waterproof cable with 8
VID-71_9_1M Industrial Inspection Camera 9mm & 1M Cable with 4 LED 2.4" HD LCD, Borescope IP67 Waterproof, Car Engine Pipe Repair AdBlue / Battery / Anti-freeze / Cleaning Fluid you can determine whether theThis 2. 4" HD full color LCD Inspection Camera allows you to view and inspect hard to reach area and hasten problem identifcation. Applications : Widely used in auto maintenance and production, engine inspection, plane repair, emergency rescue, army exploration, pipeline detection, sewerage maintenance, and in any deep area that can't be reach by human hands. Specifications: Main Unit: Display: 2. 4 TFT LCD VGA 234 x 480 Pixels 16M color Power: 4 x 1.