Copper Cap Ruler / Big Cap Device / Small Cap Foot Ruler / Inner Diameter Micrometer / Head Circumference Ruler

Specification Total cap size Adult cap size 49 62CMName Cap ruler also known as inner diameter micrometer cap amount Species Adult hat rulerMeasuring range large cap 49 62 cm for adults Method Hat cap the position of the sweat band in the scale of the measured value A is the US unit F is the legal unit E is the English unit and CM is the standard assembly unit Color silverMaterial copper steel Cap rules need to know Suddenly store the acid and alkali substances together Then wash with water and try to avoid contact with liquids And let other items squeeze gently When there is an error it should be slightly adjusted two screw pointers Measuring the hat the hat ruler in the hat the natural light expansion measurement dont use too much Tips Whether it is good quality machinery and accessories you need to use the correct method of use You also need to learn the correct maintenance or storage methods Therefore in order to ensure a longer service life of the machine or special tools caps Package includes Includes 1 X Copper Cap Ruler Details pictures