1
Glass Test Disc
2
ON/OFF LED Indicator
3
CAL Test Disc
4
Thermal Conductivity Calibration inlet
5
Reflectivity Calibration Inlet
6
Cylinder Cap
7
Gemstone Test Pad
8
Reflectivity Display Screen
9
ON/OFF Display Button
10
ON/OFF Button
11
DC Power Jack
12
Probe Pen
13
Probe Protective Cap
8