测量工具
| 规格参数 | 参数值 |
|---|---|
| IMPA编码 | 650990 |
| 产品单位 | PCE |
| 产品规格 | Recommended for use where extreme accuracy is required. Base and blades are hardened, ground and lapped to insure that the square has a straight, parallel setup. 1st and 2nd grades are available according to their tolerance. Non graduated types are most commonly used but graduated types are also available upon request. 2nd Grade. |
| 中文汉化 | 650990 带底座精密直角尺 二级精度（±0.070），500×300毫米 -----描述-----：该直角尺推荐用于对精度要求极高的场合，其底座和刀片均经过硬化、研磨与抛光处理，确保具备良好的直线度和平行度。根据公差不同，提供一级（1st Grade）和二级两种精度等级。虽然最常见的为无刻度类型，但也可根据需求提供带刻度版本。一级精度特别适用于需要高准确性的测量与校准工作，在机械制造、工具加工及精密工程等领域中广泛应用。 |
| IMPA版本 | 8th Edition |
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