JBM-1M,JBM-1A Digital microhardness testerDetailed product description：

JBM-1M and JBM-1A digital microhardness testers are high-tech products that integrate optics, electronics, and electronics. These instruments have a novel and beautiful design, as well as good reliability, operability, and intuitiveness. They are upgraded products of microhardness testers.

The JBM-1M and JBM-1A digital microhardness testers use computer software control, high magnification optical measurement systems, photoelectric sensors, and other technologies to achieve automatic switching between the measuring device and the indenter. Through software input, the strength of the light source is automatically adjusted, and the Vickers and Knoop test methods, holding time, file number, and storage are selected. Various hardness value conversion tables are provided for reference. The test method, test force, measured indentation length, hardness value, test force holding time, measurement times, year, month, date, test results, and data processing can be entered on the LCD large screen display, and output through a printer.

The JBM-1M and JBM-1A digital microhardness testers use a high magnification optical measurement system with a single reading from the eyepiece drum. It can measure the depth and hardness gradient of steel, non-ferrous metals, IC sheets, thin plastics, metal sheets, coatings, surface coatings, laminated metals, heat-treated carbide layers, and quenched and hardened layers.

Technical parameters
Test force: 0.098N, 0.245N, 0.490N, 0.981N, 1.961N, 2.942N, 4.903N, 9.807N
Applying test force speed: 0.05mm/s
Test force holding time: 5-99S selection
Digital eyepiece magnification: 10X
Objective magnification: 10X and 40X
Indentation measurement
Maximum measuring length: 250 μ m
Minimum measurement length: 0.1 μ m
Maximum hardness display: 9999.9
Minimum hardness display: 0.001
Measurement frequency: 0-99
Maximum height of sample: 120mm
Power supply: 220V 50HZ
Dimensions: Width 270mm, Height 515mm, Length 450mm
Weight: 30kg