Steel tape measure is a widely used measuring tool in industrial production. The main purpose is to make the measurement accuracy of conventional steel tape measure higher and more practical. It is mainly composed of steel ruler bar, auxiliary ruler, ruler end positioning iron, rear positioning iron, ruler box, and ruler spring wheel. When measuring the workpiece, the positioning iron can be used for positioning. Use the sub-ruler to read the value below millimeters. The tip of the positioning iron can also be used to mark the measured part. The ruler is compact in structure, small in size, easy to manufacture, and portable. It is a practical measuring tool in industrial production.
Steel tape is a measuring tool used to measure the length of a workpiece in the machinery manufacturing industry.
At present, the steel tape measures manufactured at home and abroad are composed of steel ruler, ruler box, retracting spring wheel, ruler end positioning iron sheet, etc. No matter how accurate the scale of the steel ruler is, it is still unable to read under millimeters when measuring the workpiece. When measuring the inner hole of the workpiece, the measurement error is even greater because there is no positioning.
The utility model is characterized in that the structure of the positioning iron at the ruler end is changed, and the auxiliary micrometer and the rear positioning iron are added, so that the steel tape can be accurately positioned when measuring the outer circle or inner hole of the workpiece, and the measurement accuracy is improved. Use the auxiliary ruler to read the value below millimeters, and use the tip of the ruler end positioning iron and the rear positioning iron to make measurement marks.
The new steel tape measure is mainly composed of the end positioning iron (1), the steel ruler (2), the rear positioning iron (3), the auxiliary ruler (4), the bead (5), the ruler spring wheel (6), and the ruler box (7). ) And other parts.