Working principle of the standard steel tape tape pull tape after fixed tape can roll up because tape with spring inside, pull in measuring length, actual it is stretched and the length of the spring scale, once your measurements, the custom tape measure inside of the tape spring automatically contraction, rod under the action of spring force, also follow contract, so the tape will be rolled up. Tape is mainly composed of feet, disc spring (clockwork spring), a tape measure shell of three parts, the so-called disc spring, spring is like a chain on the old clock. When pulled scale, disc spring is wound tight, have to rollback the force, when loosen the tension of the scale, scale were disc spring pull back.
Tape measure is also called the measuring tool, eighty-five percent of the world's tape all exports from China! Thus it can be seen that the Chinese construction importance in the world. Can see more diligence of the Chinese people, contributing to the world's infrastructure. Steel tape is a kind of measuring instruments for measuring length, when the choice should be how to check, how to use? First to check the appearance bra tape measure of the steel tape, pay attention to the feet should not have uneven surface and distorted phenomenon; Bring two edges must be smooth, should not have edge and burr; Belt width should be uniform. Feet hook should hold right Angle, can not have visual visible deviation. And feet with surface should be anticorrosive coating, and wants firm, smooth bright and clean, no bubble, peeling and wrinkle, no rust, scratches and other defects. Additional steel tape ruler take dividing lines should be uniform, clear and vertical to the feet, there can be no lines to heavy or leakage. Standard steel tape in the use of steel tape at the same time also notice to maintain, loosen the steel tape ruler, make feet slowly returned to the box, pulling out feet, at a constant speed should be slow, not allowed to overexert, trample, bending, in strict accordance with the inspection cycle gage verification plan, certified before they can use. Pay attention to the feet should not have uneven surface and distorted phenomenon; Bring two edges must be smooth, should not have edge and burr; Belt width should be uniform.
Induce should maintain a right-angle and feet, can not have the deviation of the visual visible feet with surface should be anticorrosive coating, and wants firm, smooth bright and clean, no bubble, peeling and wrinkle, no rust, scratches and other defects. In structure, steel tape is a certain elasticity of the steel belt, roll on or within the framework of metal materials' box. Ordinary steel tape ruler end is equipped with feet, brake control rod type tape attached with winding device button. Sounding the foot end of the steel tape with copper ruler tuo, its connection with feet take can be fixed, may also be linked. Steel tape is one of the most common measuring instruments for measuring length, factory use, not only in all walks of life and family, can be widely used. Steel tape can be divided into, since the volume type tape, tape brake type, roll roll tape measure. Other names: steel tape, steel box of feet.
Measure a long piece of size or distance. Workers printed tape measure gauge is commonly used in daily life. We often see is a steel tape, building and decoration in common use, is one of the family essential tools. LuBanChe ~ ~ wind draft article meters is also belongs to the steel tape. Followed by fiber tape, is the tape measure, you often see a lot of people say tape, waist foot ~ tape belong to tailor tape/quantity and so on. In the south of our country and Hong Kong area is often called a flexible rule or feet. Used for advertising promotional gifts' purpose, divided into steel tape (strip) and leather measuring tape (PVC plastic fiber feet), usually in small lovely shape.
