Second, the classification of the tape measure management
(A) class A tape measures for the administration
1. Class A tape in the tape of compulsory verification, must personalised tailor tape be in strict accordance with the metrological administrative department of the state's verification management approach, strong execution. Belong to compulsory verification of tape measure, according to relevant calibration management measures, rules and regulations and verification cycle test on a regular basis;
2. The quantity of high accuracy and variable, frequent use of tape as a random key, strengthen the daily supervision and management;
3. Class A tape measure, the number of configuration should ensure tape measure timely check, calibration and maintenance during the normal production and business operation activities;
4. Class A tape measure in principle by the metrological management department of unified control management.
(2) class B tape measures for the administration
1. The management of listed in the category B range of tape measure, such retractable tape measure sewing as to meet the requirements of national verification regulation should make periodic verification according to regulations;
2. But need to work on without verification procedures of measuring tape (test equipment) should be in accordance with the provisions for years;
3. Equipped with a number of class B tape, should be able to ensure the normal order of the enterprise production and operation activities.
(3) C tape measures for the administration
1. General tool with a tape measure, but according to actual usage executes one-time verification and validity of management;
2. Accuracy without strict requirements, performance is not easy to change the low-value tape measure and utility class tape can be arranged before use one-time verification;
(3) to the C class tape must carry on the supervision and large print tape measure management, such as irregular spot checks and in comparison to proofread.
Steel tape
A job will be for measuring tool
The structure of the measuring tape
Tape is mainly composed of a shell, feet, braking, feet hook, belt, foot spring, hockey protective sleeve and labeling eight components, specific function as follows:
1, shell: new ABS plastic, the outward appearance luster texture; Anti-throw, wear-resisting, not easy to deformation.
Article 2, feet: the thickness of 10 silk (0.10 mm) of 50 # 1 strip;
3, braking: on, side, bottom 3 d brake, hand feel stronger.
4, feet hook: rivet feet hook structure, not easy to deformation, to ensure that the measurement more pure.
5, belt, rubber, nylon two; High profile quality; Sturdy, feel is good.
6, 'spring: generally USES 50 # # carbon steel, 65 mn material: high tenacity, high precision accuracy of.
7, hockey protective sleeve: superior quality plastic, prevent broke and collision damage, enhance durability.
