Mitutoyo 115-313 Series 115 Tube Micrometer with cylindrical anvil, 0 to 1", type C

Description

The Mitutoyo Series 115 Tube Micrometer, model 115-313, is a mechanical micrometer designed for measuring the wall thickness of tubing. It has a 0 to 1" range and a cylindrical anvil, which, along with its flat spindle, allows for stable measurement on curved surfaces. Note that some product listings incorrectly identify this model with a spherical anvil, but the "type C" in the model name specifically refers to the cylindrical anvil/flat spindle combination for the inch version.

Key features

• Specialized tube measurement faces: The defining feature of this tube micrometer is the Type C measuring face combination, which consists of a cylindrical anvil and a flat spindle. This design allows for stable and repeatable measurements on the curved surfaces of a tube.
• High precision: With a measuring range of 0 to 1 inch and a vernier scale, the tool provides readings with a resolution of up to 0.0001 inches. The overall accuracy is specified at ±0.00015 inches.
• Constant force mechanism: A ratchet stop on the thimble provides consistent measuring force by "clicking" when the correct pressure is applied to the workpiece. This minimizes user error and helps ensure repeatable results between different operators.
• Durable construction: The measuring surfaces of both the spindle and anvil are carbide-tipped, which increases their wear resistance and extends the micrometer's lifespan. The frame has a hammertone baked enamel finish for durability.
• Easy-to-read markings: The thimble and sleeve have a satin chrome finish, which makes the laser-etched graduations clearer and easier to read.
• Protective casing: The micrometer is supplied in a fitted plastic case to protect the precision instrument during transport and storage.