KERN PFB 120-3A Operating Manual page 25

 Place item to be weighed B, e.g. 200 g.
Wait for stability display, then press the PRINT key. The weight value will be
added to the summation memory and edited. Number of weighings, followed by
the total weight will be displayed for 2 sec. After that the current weighing value is
displayed.
 Add more weighed goods as described before.
Please note that the weighing system must be unloaded between the individual
weighing procedures.
This process may be repeated 99 times or till such time as the capacity of the
weighing system has been exhausted.
PFB-BA-e-1741 25