Notes of GHS-8AT external case when mounting
As you mount the external case, the orientation of the display window mounting Align the convex portion of the instrument body to be notch outside of the case to fit the LCD screen as shown in the figure below.
Is returned to the opposite direction at a time when the cover nut occasionally entered diagonally, please re-tighten again.
Please close the gap on the front cap and cover nut until there is no more.
It may cause failure of hydrogen sulfide gas may enter inside the body to be not completely tighten.