If you have access to another chronograph stick that in series with yours and that may show up an issue with your F1. However, if conditions are causing the problem the second chronograph may be...
Type: Posts; User: zimmer
If you have access to another chronograph stick that in series with yours and that may show up an issue with your F1. However, if conditions are causing the problem the second chronograph may be...
If the day was a constant overcast (obviously not dark dark though) with conditions constant that is what my old F1 used to like. The bright sunny days gave it hell, even with diffuser screens...