It is tapered at one end, to reduce the bounce of the ball as it rolls onto the green. The ball is pulled out of the PRECISIONED notch by gravity when the device is slowly raised to the correct angle, rolling onto the green at a repeatable velocity.
Brand: Acuity
MPN: usga
Performance/Activity: Golf
UPC: Does not apply
Related STIMPMETER professional golf instrument. USGA 19
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