A tribute to the legend, half a century of glory crowned<br> To COMMEMORATE THE 50th ANNIVERSARY OF THE KANMAIDEN BRAND, THIS LIMITED EDITION COLLECTIBLE TOOL is specially LAUNCHED.Engraved with the “50TH UNIVERSAL” badge of honor, it is not only a performance tool, but also a metal history book engraved with half a century of craftsmanship.<br> Dual-standard accuracy, global standard<br> Body length: 120mm / 4.72inches (accurately corresponding to the metric and imperial double system)<br> Key components: 45mm / 1.77inches (strictly follow international general specifications)<br> Full mirror polishing treatment, edge chamfering process to achieve millimeter-level precision card position<br> Multiple application scenarios<br> Industrial-grade accuracy testing: the preferred measurement benchmark for precision manufacturing<br> Engineer collection gift box: with walnut display stand to highlight professional identity<br> Laboratory standard reference: constant temperature steel to ensure that the thermal expansion and contraction error becomes zero<br> Vocational and technical education: visual display of standardized work specifications