Pen Tool Crystal Tester Tool Conductivity Meter Drill Pen Hardness Identification Instrument Detection Diamond Authentic Jade for Hardness Testing of Precious Metals

Size: 160*40*23mmType:?identification?and?detection?chip Material:?engineering material Probe?material:?alloy Color:?black Power: DC9V?battery Identifying?principle:?by probe heating chip detection 1*?Thermal conductivity Insturction: 1.When?the?temperature?is?lower?than?10?degrees?or?higher?than?35?degrees,?it?can?not?be?accurately?measured. 2.Detection?is?more?accurate?in?windless?and?dustless?environments. 3.Ensure?that?the?surface?temperature?of?the?tested?object?is?consistent?with?the?indoor?temperature. 4.The?surface?of?the?object?to?be?tested?should?be?clean.?Oil?stain.?Waxing.?Impact?detection?of?semi-finished?products 5.Use?glass?to?calibrate?before?each?test?and?test?after?each?test. 6.Surface?neatness?ensures?that?the?probe?is?in?full?contact?with?the?detected?object?at?90?degrees?perpendicularity 7.The?hardness?is?5.5?or?6?if?it?appears?to?jump?between,?for?example,?5-6?after?testing.