When you are in the surrounding of green,
you will be very confident. But, when the range of mass if well
combines with the marshland and
woods, it will mislead your eyes (the green horizontal difference) but
you don't know.
The "Putter with eye" provides you a
correct basis, forsters your ability of judgment slope of green, and
keeps your putting route more perfect.
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Green Slope Detector
If the general golf putter needs to match in
HONO "The Best Caddie™", it has to attached with the above-mentioned
device, detachable for easy use.