Mitutoyo 513-443-16A Horizontal Dial Test Indicator

Product Description

The MITUTOYO 513-443-16A is a horizontal dial test indicator designed for precision measurement in machining, inspection, and quality control applications. It features a 40mm black dial with a graduation of 0.0001 inches and a measuring range of 0 to 0.016 inches, with an accuracy of 0.0002 inches. The 0-4-0 bidirectional dial layout supports straightforward deviation readings in both directions. Built with a no-clutch structure, carbide-tipped contact point, and O-ring sealed housing, this indicator is suited for use in shop-floor environments where dust, oil, and vibration are everyday concerns. Machinists, tool and die makers, and quality technicians are the primary users.

This indicator fits horizontal mounting configurations common to surface plates, magnetic bases, transfer stands, and CMM fixtures. It is appropriate for both production and inspection environments where tight tolerances must be verified repeatedly. The included contact point has a ball diameter of 0.079 inches. Its glare-free crystal and scratch-resistant face maintain readability under shop lighting without requiring special positioning. The automatic reversal feature allows continuous bidirectional measurement without manual reset, which supports efficient use during repetitive inspection routines.

Key Features

• Measuring range of 0 to 0.016 inches with 0.0001-inch graduation for fine deviation detection
• Accuracy of 0.0002 inches suitable for precision inspection tasks
• No-clutch structure reduces mechanical complexity and maintenance requirements
• Carbide-tipped contact point resists wear during high-cycle use
• O-ring seal and dust and oil proof construction protect internal components in shop environments
• Glare-free, scratch-resistant crystal over 40mm black dial for clear, consistent readability
• Automatic reversal supports bidirectional measurement without manual reset

Compatibility

Designed for use with standard horizontal dial indicator holders, dovetail mounts, and universal magnetic base arms commonly used in machine shop and inspection room setups.

Installation Notes

Installation is typically performed by machinists or quality technicians using a dovetail clamp or lug-back adapter mounted to a magnetic base or indicator stand. Ensure the contact point is oriented parallel to the measurement axis and that the spindle travel is not blocked at the limits of the measuring range. Avoid overtightening the clamping mechanism on the indicator stem, as this can affect calibration and spindle movement. Handle the contact point carefully during tip changes to protect the carbide tip and internal linkage.