Indicators

The collection carries 17 precision indicators and indicator accessories across four trusted brands: Starrett, Mahr, Mitutoyo, and Fowler. Instrument types include dial test indicators (lever-type), dial indicators (plunger-type), electronic digital indicators, comparator stands, a groove gauge, a long-range dial indicator, and shaft alignment clamp sets. Together they cover the full spectrum of comparative measurement, runout inspection, alignment, flatness checking, and SPC data collection applications in machine shops, quality labs, and production inspection environments.

A dial test indicator also called a lever indicator uses a pivoting stylus arm rather than a moving plunger. The stylus tip sweeps an arc when deflected, making it ideal for measuring in confined spaces, against bores, inside recesses, and at angles where a plunger-type indicator cannot reach or cannot be properly aligned. The Starrett 716 Series and Starrett 811 Series in this collection are classic lever-type dial test indicators. A dial indicator or plunger indicator uses a linear spindle that moves directly in and out along a straight axis, providing a larger measuring range and greater travel suited for surface plate work, comparator stands, and height gauges. The Starrett 656-6041J long-range dial indicator with 6" travel is a prime example. Choosing between them depends on part geometry and measuring access.

An electronic digital indicator replaces the mechanical gear and pointer mechanism of a dial indicator with a linear encoder and digital display. The primary practical advantages are easier reading at a distance without any pointer parallax, no counting revolutions and the ability to output measurements directly to a computer, SPC software, or statistical collection system via USB, RS-232, Bluetooth, or wireless transmission. The Mahr 1086 R MarCator, Mahr 1086 RI (Integrated Wireless), Mahr 1086 R-HR (high-resolution), Fowler Mark VI, Fowler QuadraTest, Mitutoyo 543 Digimatic, and Starrett 2900-1-1 in this collection all offer digital readout with data output making them directly connectable to quality management systems without manual transcription.

The Mahr 1086 R is Mahr's flagship production digital indicator, available in four measuring spans from 12.5mm to 100mm, in both 8mm metric and 3/8" imperial stems. Its defining feature is the Reference System, a zero-retention mechanism that stores the established zero point internally, keeping it active through power-off cycles, spindle retractions, and setup disturbances. When the indicator is powered back on, the stored zero is immediately active without re-zeroing against a master eliminating a major source of setup error and cycle time waste in production environments where the indicator is powered down between shifts or moved between fixtures. Battery life is approximately three years. The 1086 R also supports five selectable resolutions from 0.01mm down to 0.0005mm on a single instrument, and MarConnect triple-protocol output (Digimatic, RS-232C, and USB) is standard on every unit.

The Mahr 1086 RI is the Integrated Wireless variant of the 1086 R. Unlike external wireless transmitter modules that attach to a standard indicator as an add-on, the 1086 RI embeds the radio transmitter directly inside the indicator housing eliminating the cost, weight, and cable management complexity of an external module. This makes the 1086 RI the cleaner solution for production gaging stations, measuring fixtures, and multi-gauge setups where cable routing is difficult, creates snag hazards, or adds unacceptable clutter to a tight workstation. It retains all the core features of the 1086 R platform including the Reference System, selectable resolution, and rotating bezel.

The 1086 R-HR is the high-resolution variant of the Mahr 1086 R platform, offering finer resolution steps that extend sensitivity beyond the standard 1086 R's range reaching down to 0.0002mm (0.00001") for applications requiring extremely fine discrimination of small dimensional variations. This is relevant in precision lapping, fine grinding, gage calibration, and surface plate measurement tasks where standard 0.001mm resolution is not sufficient to resolve the variation being inspected. The 1086 R-HR is available in 8mm metric stem configuration for drop-in compatibility with standard gage bodies and measuring stands.

The Mitutoyo 543 Series Digimatic Indicator ID-H is a high-accuracy electronic plunger indicator with a 1.2" measuring range and Mitutoyo's SPC-ready Digimatic output, enabling direct wired connection to Mitutoyo data collection hardware, multiplexers, and SPC software. As part of Mitutoyo's Digimatic ecosystem, it integrates seamlessly with U-WAVE wireless transmission units, MeasurLink SPC software, and data processors making it a natural fit for automated measurement cells and multi-gauge data collection setups already using Mitutoyo instruments. Its high-definition LCD display and inch/metric conversion make it a versatile everyday indicator for both production and quality lab environments.

Comparator stands are fixed-column benchtop bases that hold a dial indicator in a repeatable, stable position above a surface plate or reference flat for comparative height and surface measurement. The Starrett 653G Granite Comparator Stand uses a solid granite base that provides exceptional vibration damping, thermal stability, and a non-magnetic, non-corrosive reference surface making it the preferred choice for metrology labs and controlled quality rooms. The Starrett 653 Cast Iron Comparator Stand uses a traditional cast iron base that provides excellent rigidity and mass at a more economical footprint well suited for production floor comparator setups and toolroom applications where granite's premium properties are not required. Both models are sold without an indicator, giving buyers the flexibility to pair them with the indicator from this collection that best matches their resolution and output requirements.

The Starrett S668CZ and S668DZ Shaft Alignment Clamp Sets are precision mounting accessories designed to hold dial indicators securely on rotating shafts for machinery alignment to check coupling alignment, bearing journal runout, and spindle concentricity on lathes, pumps, motors, and power transmission equipment. The clamp sets attach to the shaft and position the indicator contact point against a reference surface, allowing the operator to rotate the shaft and read total indicator runout (TIR) directly. The S668DZ offers an extended configuration for larger shaft diameters or deeper reach requirements compared to the S668CZ, while both provide the secure, repeatable indicator positioning that accurate shaft alignment demands.

All indicator orders ship free to the continental USA, backed by a best-price guarantee. The Fowler 54-530-156-0 Mark VI also ships with Fowler's lifetime warranty. A 30-day return policy and Affirm financing at checkout are available for all products. Government and institutional buyers can submit an RFQ through the dedicated Government RFQ page. For help selecting the right indicator type, stem size, measuring range, or data output protocol for your gaging setup, call or text Gustavo directly at 617-398-7852, Monday through Friday, 8am–5pm EST.