量管家0-200mm/0-300mm数显深度尺 产品特点：1.原点数显卡尺。2.采用原点编码技术，无需反复调零。3.更省电4.3V锂电池，电池寿命＞1年Feature：1.ABSOLUTE digital caliper belongs tonew generation digital caliper.2.No response speed limit and no need to set zero often ,because we take the ABSOLUTE Encoder technology.3. Longer battery life4. 3V Lithium battery, battery life＞1 year