This unit is used to orient and measure the cylinder of a silicon ingot or other single crystal rods. It is especially designed to work with a crystal rounding machine. It could be also used to modify a grinding machine that does not have an orientation apparatus.

The measure accuracy of this unit is +/-30”, and the minimum reading is 10”.

The mother apparatus of this unit is type DX-2. According to the demand of customer the mother apparatus could be other types, and the measure accuracy would be +/-15” and minimum reading 1” if the DX-4A instead of DX-2 is used. Various designs could be made to meet a special requirement of customer.