SURFACE RESISTANCE ANALYZER MODEL RA-10
A surface resistance analyzer is a required device for most military and aircraft facilities that weld Aluminium. It is used to check the cleaning and surface prep of group I (Aluminum) materials. Simply, place the two pieces of material to be welded between the electrodes of the RA-10, push the button, and the RA-10 will display a surface resistance reading. It is that simple, no calibration is required!!!!!!