| This is my two loop spiral grade. From the bottom to the top is a 12 inch vertical climb and no.....I don't know what the gradient is, especially on that last part. |
| Date:
1/1/2005 |
Location:
Hatboro, PA |
Views:
113 |
Collection Of:
 
Bob Rule, Jr. |
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Author: Bob Rule, Jr.
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| Picture Categories: |
This picture is part of album: On30 |