Here are the basic steps to use the Concentricity Alignment Tool (CAT) in almost any turbine.
Insert tape measure into empty packing groove until it exits from the packing groove on the opposite side of the shaft.
Attach the head to the end of the tape using the tape clip with the wire retainer to secure the end of the tape to the head.
Insert the head into the packing slot by depressing the lever arm.
Pull the head to the 3:00 o'clock position using the tape measure and then "zero" the meter using the coarse adjustment on the head and the fine adjustment on the power supply.
Pull the head to the 6:00 o'clock position using the cable and take the reading.
Pull the head to the 9:00 o'clock position and take the reading.