... ≤30b) Angle Reading 3c).Counter angle:-10°--+100° d).Sample angle: -10°--+50°e). Digital reading: digital display of angle in deg ... the sample, according to nλ=2dsinθ,product diffraction, and the digital counter absorb the x-ray and display through the uA meter ... up with voltage stabilizer and controller , high voltage transformer, magnifying, digital counter, air pump , cooling fan , x-ray tube.4.2. ...