Comparison of three popular coating thickness measuring instruments under 1,000 yuan

Since Beichao released the selection system - "Check Instrument", the comparison of similar and competing instruments can be said to be at your fingertips. In this issue, we will use a set of data to take a look at the popular models in the low-cost Thickness Gauge market in the field of coating measurement, and see the differences between these three Thickness Gauges. Of course, what they have in common is that they are all popular consultation objects in the market.

In this issue, the following three instruments were selected for comparison. They are Lantai's CM8821/Yuwen's EC770 and Weifu's WH-81. All three are currently selling for less than 1,000 yuan.

Classification	CM8821	EC-770	WH-81
picture
brand	Rantai	Yu asked	Weaver
place of origin	CHINA
Measuring principle	Electromagnetic induction	Electromagnetic induction/eddy current	Electromagnetic induction/eddy current
Measuring range	0-1000um	0-1300um	0-1250um
tolerance scope	±1-3%	±3%	±3%
Minimum base diameter	6mm	6mm	10mm
minimum curvature	Convex 3mm/Concave 50mm	Convex 1.5mm/Concave 25mm	Convex 5mm/Concave 5mm
Thinnest substrate	0.3mm	unknown	0.4mm
probe	Separate wired probe	Integrated probe	Integrated probe
Statistical function		Mean, Min, Max, Standard Deviation	Maximum, minimum, average
Icon function	x	x	x
weight	210g	92g	115g
size	161 ×69 ×32	110 ×53 ×24	110 ×65 ×30
Power supply form	4 AAA batteries	2 x 1.5v AAA batteries	2 AAA batteries

After reading the comparison table above, do you have a systematic understanding of the three Thickness Gauges? If it were you, which one would you buy?