Casey from SWISCO responded:
October 31, 2010
For a 23" Series 351 balance, if you have a stamp of 22d choose 2240 stamp option.
If your balance does measure 22" with a stamp of 22d, please remove the window sash and place it on a scale. We need the weight of the window sash in pounds to determine the proper stamp option. If you are unsure of the series you selected, please feel free to post some images for us to research. |