1PC 0 80mm double scale plastic measuring slide Suitable for students as a measuring tool Functions as a micrometer with a measuring linear for internal diameter and depth measurement Double scale design provides more accurate measurement readings Made of plastic, it is lightweight and easy to handle for students during measurements Size : D indicates its particular dimensions for specific applications Key benefits - enables practice with micrometer style measurement for learning internal diameter and depth - double scale design enhances readability and improves measurement confidence - lightweight plastic construction makes it comfortable for students to use over extended sessions - compact and portable for classroom, lab, or workshop use Recommended use scenarios - in a classroom or lab, measure the internal diameter of small tubes, bushings, or drill holes - assess the depth of slots, recesses, or grooves in educational components - perform quick measurements during science or engineering projects to verify dimensions before assembly