English
EspañolThe difference between leather tape and steel tape
1. Composition of different leather tapes: The internal structure is combined by a spring reel and a ruler reel. If the measuring size of the leather tape is enlarged, the radial direction becomes larger, and there is a kind of leather tape designed for the technical problem of inflexible use. Steel tape measure: It is mainly composed of eight parts: shell, ruler, brake, ruler hook, strap, ruler spring, anti-drop steel tape sheath and labeling.
2. Different material functions
Steel tape measure: The tape material of the steel tape measure is made of steel. It is mainly used to measure some wood or floor tiles, wooden floors, etc.
Leather tape measure: Fiber tape measure is the academic name for leather tape measure. In fact, they are commonly referred to as tape measure and cloth ruler. They are all fiber tape measures, which are generally used to measure waist circumference or clothes.
Temperature effect
The main structure of the steel tape measure is a whole steel strip with certain elasticity, and the steel strip has the characteristics of thermal expansion and contraction.
(1) When the temperature of the standard steel tape and the tested steel tape are both 20%, the dimensional error caused by the temperature is zero.
(2) When the standard steel tape measure and the tested steel tape measure have the same material and the same temperature, the dimensional error caused by the temperature is proportional to the thermal expansion coefficient and the temperature.
(3) When the standard steel tape measure and the tested steel tape measure have the same material and different temperatures, the size error caused by the temperature is proportional to the thermal expansion coefficient and the temperature difference between two feet.
(4) When the standard steel tape measure and the tested steel tape measure have different materials and the same temperature, the size error caused by the temperature is proportional to the difference in the thermal expansion coefficient of two feet and the temperature of two feet.
(5) When the standard steel tape measure and the tested steel tape measure have different materials and different temperatures, the size error caused by the temperature is proportional to the thermal expansion coefficient difference of two feet and the temperature difference of two feet.
