Mitutoyo 368-865 Holtest Inside Micrometer, type II, 0.65 to 0.8"

Description

The Mitutoyo 368-865 Holtest Inside Micrometer is a mechanical, three-point micrometer used for measuring the internal diameters of bores and holes. This Type II model is an economical version of the standard Holtest, featuring contact points made from alloy steel rather than the more durable titanium-coated carbide.

Key features

• Economical construction: The Type II series is a cost-effective option due to its hardened alloy steel contact points, which are more budget-friendly than the titanium-coated carbide anvils used in higher-end models.
• Self-centering measurement: The micrometer's three contact points are spaced at 120° intervals. This allows it to self-center within the bore, ensuring accurate and repeatable measurements.
  
• Blind hole measurement: The design allows for measurements to be taken closer to the bottom of a blind hole.
  
• Deep hole measurement: An optional extension rod can be used for measurements in deep holes.
  
• Repeatable force: A ratchet stop mechanism provides constant measuring force, which helps eliminate measurement variation caused by human error.
  
• Optional setting rings: To ensure accurate calibration, optional setting rings are available for setting the origin point.
  
• Storage: The micrometer is supplied in a fitted plastic case for protection.