A specialised precision instrument designed to measure large internal dimensions, such as the inside diameter of large bores, cylinders, and other hollow structures. The 'tubular' design refers to the use of lightweight, hollow tubes (or rods) that can be extended and combined to cover a wide range of measurements, making it ideal for measuring large internal dimensions with high accuracy.
In summary, a tubular inside micrometer is an essential tool for accurately measuring large internal dimensions in various industries. Its lightweight, modular design, combined with high precision and versatility, makes it a valuable instrument for tasks requiring detailed and accurate internal measurements over large distances.