- Caliper: internal and external measurement, metric caliper. Provides precise sizing of inner bores and outer dimensions. Compact, easy-to-read scale for reliable measurements in workshops. - Caliper ruler measuring tool: made of strong plastic material, lightweight. Durable, portable tool for fast measurements in the field, classroom, or shop. Suitable for non-wet environments and economical for everyday use. - Millimeter measuring tool: a tool for a broad range of industrial and individual applications. Delivers accurate millimeter readings for parts, materials, and assemblies. Applications - In manufacturing and metalworking to verify bore and outer dimensions during setup and inspection. - In DIY projects and woodworking to confirm part sizes and alignments. - For quick layout checks and measurement references in general use.