Whether a chamfered edge is in a screw hole or on the end of a rotary shaft, these gauges find its diameter. Use them to confirm the tolerance of edges after milling, drilling, and reaming. They measure chamfers on the inside or outside diameter of your bore. As you trace the probe of these gauges along an edge, an internal sensor records the distance and angle. The calculated diameter displays on the LCD screen for quick readings. All have SPC data output to transfer information to your computer or data processor—you don’t even need any cables.

Choose a gauge with an angle that is greater than or equal to the chamfer angle you are trying to measure.

Check the top diameter of chamfered holes to make sure they’re within tolerance. These gauges are often used for quality control in milling, drilling, and reaming. Press the three-blade probe into a chamfered hole and twist slightly to center. Once the blades touch the hole’s slopes, the dial will display the diameter. Zero-set these gauges on a flat, ground surface when needed.

Choose a gauge with a measuring angle that’s greater than or equal to the angle of the chamfered hole you’re measuring.

Verify 118° drill point angles after sharpening. The ruler has a hook for alignment.

For a flush fit every time, these gauges ensure your fastener and countersink mate perfectly for a secure hold. These gauges are often used to verify the top diameter and angle of holes in precision assemblies. They’re preferred over chamfer gauges, which also measure diameter but don’t check countersink angle. When the conical probe touches the hole’s angled walls, the diameter will display on the dial.

To verify the countersink angle, feel how snug the probe fits into the hole. You’ll also know the angle is incorrect when the reading for the top diameter is a different value than expected. Choose a gauge with an angle that matches that of your hole.

Mate your fastener and countersink perfectly for a secure hold with these Starrett gauges. They are often used in vehicle and metal manufacturing to check the top diameter and countersink angle of a hole. When the conical probe touches the hole’s angled walls, the diameter will display on the dial. You can verify the countersink angle based on how snug the probe fits into the hole. Even when you lift the gauge out of the hole, your measurement will stay on the dial until you press the reset button.

Choose a gauge with an angle that’s equal to the angle of the countersunk hole you’re trying to measure.

Magnify and measure in one operation. Two lenses provide distortion-free viewing. This loupe includes a general purpose scale that measures circles from 0.002" to 0.0625"; radii from _1/16" to _3/8"; angles up to 90° in 5° increments; lengths up to 0.5" in 0.005" increments; lengths up to 10 mm in 0.2 mm increments; and line widths from 0.016" to 0.250".

Reach deep into small holes and slots for precise depth measurements. This gauge has a rod to measures the depth of recesses where the blade won’t fit. The blade has a hook which grabs the edge of an object for easy alignment. Markings are etched for wear resistance.

These sets combine a wire gauge, a tapered-width feeler gauge, and a set of feeler gauges for tight spots in one tool. The tapered-width gauge is designed for measuring hole and slot widths and diameters. The feeler gauge leaves check the thickness of slots, gaps, and alignment; each leaf is marked with thickness. Leaves are riveted together in a fan design that folds up for portability.

Measure diameters, angles, and other complex geometries—like an optical comparator—but without all the training. These gauges have an easy-to-use touch screen that guides you through taking measurements step-by-step. Extremely precise, they measure in the smallest increments of any height gauge in our offering, and they’re also our most accurate. Use them in machining and toolmaking to mark material before cutting it. To fly through big batches of work, program up to 50 types of repeated measurements.

From calibration reminders to calculation error alarms, these gauges have functions to make sure they give you accurate and consistent readings. Upon startup, they walk you through a scale check to detect traces of contamination that would cause errors. The air bearing system helps the slider glide smoothly up and down yet holds its spot steady when it’s time to measure. Rotate the screen to read it at the angle you need. Zero-position memory, also known as absolute (ABS) positioning, retains the measuring position even when the gauge is turned off.

With up to two months of storage to record actions and measurements, these gauges create an archive you can look through and identify trends. Connect them via Bluetooth to your phone, tablet, or other devices to remotely monitor and analyze data in real time. Otherwise, use the SPC data output to connect to a computer or data processor. To send data right into programs such as Excel, use a USB cord or RS-232 cable (both not included).

Also known as surface gauges, use these to scribe lines, transfer measurements, or as height and depth gauges. They have a V-groove base that can be used on round or flat surfaces.

Gauge pins can be pushed down for use against the edge of a surface plate or T-slot for linear work.