• INSTRO tube type internal diameter micrometers
 • 50-5000mm inside measurements (inner diameter, distance…)
 • Extra hardened extension rods are also lightweight
 • Special chrome plated micrometer head
 • Detachable connection parts
 • Main rod and all rods are hardened and ground.
 • Micrometer head and rod position can be adjusted accordingly.
 • Movable rod is hardened and lapped with a supported stainless steel coating.
 • Interchangeable steel tube measuring rods
 • Low coefficient of friction, smooth movement - resulting in high precision
 • Rods provided with insulated handles