焦点扩展器
通过2倍，3倍和5倍在1.25英寸的枪管中可用，在2英寸枪管中可探索科学焦点扩展器，通过允许每只目镜以两种能力表现，为您的目镜阵容增添了多功能性。例如，如果您的特定目镜/望远镜组合会产生50倍的功率，则添加2倍焦距的扩展器将将其更改为100倍功率。
也可以在亚马逊上使用
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