Starrett 49504 Electronic Drop Indicator 0.6 in

Product Description

The STARRETT 49504 is an electronic drop indicator designed for precise dimensional measurement in machining, inspection, and metrology applications. It features an LCD display and delivers accuracy to 0.0001 inches (0.002 mm) across a measuring range of 0.6 inches (15 mm). Resolution is 0.001 mm, making it suitable for close-tolerance work where analog indicators fall short. Readings are available in both inch and metric units, selectable on the instrument. The unit ships with two lithium CR2032 3V batteries included. Machinists, toolmakers, quality control technicians, and precision maintenance trades are the primary users.}

The STARRETT 49504 is used in machine shop environments, production inspection stations, and field maintenance situations requiring accurate runout, flatness, or positional deviation checks. It fits standard 8 mm stem mounts, making it compatible with common magnetic bases, indicator holders, and surface plate setups. It is appropriate for both shop floor and bench use where a digital readout is preferred over a dial face for reduced parallax error and faster reading.

Key Features

• Accuracy of 0.0001 inches (0.002 mm) for high-precision measurement
• 0.6 inch (15 mm) total measuring range
• LCD display with inch and metric unit selection
• 0.001 mm resolution for fine-tolerance inspection
• Standard 8 mm stem diameter fits common indicator holders and magnetic bases
• Includes two CR2032 3V lithium batteries — no separate purchase required

Compatibility

Designed as an OEM-style drop indicator for use with standard 8 mm stem-compatible indicator holders, magnetic bases, and surface plate accessories common in precision measurement setups.

Installation Notes

Installation is performed by machinists or metrology technicians familiar with indicator mounting and zeroing procedures. Secure the 8 mm stem in a holder or magnetic base before zeroing the instrument against a reference surface. Avoid side-loading the stem during measurement, as this can introduce error or damage the probe mechanism. Battery replacement requires a CR2032 coin cell and should be performed with the instrument powered off.