Need additional dimensions of S500-31

A home owner from United States says:
What is the minimum dimension from the top of the seat pin to the bottom of the metal tube? From the top of the seat pin to the tip of the spiral?
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Paul Sr. from SWISCO responded:
I am not exactly sure what additional dimensions you are looking for so I included an alternate view of the tip of the S500-31 spiral balance. The image displays the tip slid all the way into the tube. On the image I included the dimension from the seat of the pin to the tip of the spiral. You should not need these additional measurements though. You should only need to measure the length of the metal tube, which for the S500-31 is 31 inches.
View of the S500 spiral balance with the tip slid all the way into the tube.
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