50-200mm Inside Mic.

This an interchangeable rod type inside micrometer that offers you the following benefits: •Interchangeable measuring rods allow you to take inside measurements of up to 1000mm. •Each interchangeable rod is marked with its measuring range. •For models supplied with more than one interchangeable rod, you can achieve the full measuring range by combining spacing collars with the rods. •A practical handle to help you measure deep bores is included in sets up to 300mm range.