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04:14:05",152298,2024,"152298","PTC 239 便携式6倍Ramsden手持放大镜","239","PTC Model 239 是一款高品质精密Ramsden手持放大镜，6倍放大倍率，配备双元件光学系统，**平场设计，视场直径19mm，工作距离76mm，黑色阳极氧化外壳，轻巧耐用，美国制造。","\u003Ch3>产品概述\u003C\u002Fh3>\u003Cp>PTC Model 239 是一款高品质、精密的 Ramsden 手持放大镜。该低倍率（6X）仪器具有出色的光学性能，配备**平场设计，视场直径为 3\u002F4 英寸（19 mm），采用双元件 Ramsden 放大镜组，眼睛与被检物体之间的工作距离可达 3 英寸（76 mm），操作舒适便捷。\u003C\u002Fp>\u003Ch3>产品特点\u003C\u002Fh3>\u003Cul>\u003Cli>\u003Cstrong>放大倍率\u003C\u002Fstrong>：6X，低倍率高清晰度\u003C\u002Fli>\u003Cli>\u003Cstrong>双元件 Ramsden 放大镜组\u003C\u002Fstrong>：提供卓越的光学成像质量\u003C\u002Fli>\u003Cli>\u003Cstrong>**平场设计\u003C\u002Fstrong>：视场直径 3\u002F4 英寸（19 mm），视野平坦无畸变\u003C\u002Fli>\u003Cli>\u003Cstrong>长工作距离\u003C\u002Fstrong>：眼睛与物体间距 3 英寸（76 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