Diamond pen identification instrument test hardness
Diamond pen / diamond thermal conductivity meter / diamond identification instrument test hardness without battery
1. The thermal conductivity meter is an electronic instrument designed and manufactured according to the thermal conductivity of diamonds to identify the true and false of diamonds.
2. This instrument is a precision electronic instrument, the use environment is 5-35 degrees Celsius, and the air relative humidity is 80%.
3. The tested gemstone must be clean, dry and at room temperature.
1. Pocket portable handheld.
2. Non-destructive testing, easy and accurate operation.
3. Working power: DC9V battery.(not included)
4. Dimensions: 160*40*22mm Weight: about 160g