| 摘要 |
PROBLEM TO BE SOLVED: To provide a golf distance measuring instrument capable of determining the accurate distance by a simple operation. SOLUTION: A distance is measured based on a survey visual angle method from the length reflected on a scale engraved on the field of view of a telescope 3, while referencing to the length of a flag 2, by using the height of a seven-feet flag pole 1 on a green as a reference value.
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