A dual-scale vernier caliper equipped with standard outside and inside jaws. Hardened stainless steel construction with easy-to-read, satin-chromed scales.

The Mitutoyo 530-502 Standard Model Vernier Caliper has an Inch/Metric dual scale with a measuring range of 0 to 1000mm with a Lower Scale Graduation of 0.05mm, Upper Scale Graduation of 1/128″ and an accuracy of +/- 0.05mm. Features a small face angle of 14 degrees which provides easy reading. Measures Outside Diameter, Inside Diameter, depth and steps. Furnished in Satin Stainless Steel with easy reading graduations. Equipped with a lock screw for holding the sliding jaw position allowing the user to get easy measurements.

1．游標卡尺是比較精密的測量工具，要輕拿輕放，不得碰撞或跌落地下。使用時不要用來測量粗糙的物體，以免損壞量爪，不用時應置於乾燥地方防止鏽蝕。

2．測量時，應先擰鬆緊固螺釘，移動游標不能用力過猛。兩量爪與待測物的接觸不宜過緊。不能使被夾緊的物體在量爪內挪動。

3．讀數時，視線應與尺面垂直。如需固定讀數，可用緊固螺釘將游標固定在尺身上，防止滑動。

4．實際測量時，對同一長度應多測幾次，取其平均值來消除偶然誤差

游標卡尺使用完畢，用棉紗擦拭乾凈。長期不用時應將它擦上黃油或機油，兩量爪合攏並擰緊緊固螺釘，放入卡尺盒內蓋好。

參考介紹網頁：

游標卡尺- 台灣Wiki
http://www.twwiki.com/wiki/游標卡尺