The putting calculation and the delivery of a putt needs some elements of physics  to be used.  The BI 3 Putter is designed to help convert all the complexities by using the following features to simplify the whole PUTTING PROCESS:

• Fixed lie angle means consistent set up & delivery
• Mallet/arc shape controlled power to face
• Head weight to match shaft and grip
• Designed to deliver best impact and roll
• Face balanced and pendulum balanced
• Biggest ‘sweet spot’ available to all of face 
• Spring affect ‘soft feel’ face with preset loft
• Anti ‘toeing or heeling’ set up sole runners
• Power pod to deliver balanced energy 
• Gearing control for positive/negative roll
• High grade Stainless Steel mix for feel and roll 

Physics data and research information  BGA Research Data