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.

For technical drawings and 3-D models, click on a part number.

Make sure the top diameter of a chamfered hole isn’t too big or too small. These gauges are often used as a quality control check after 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.

For technical drawings and 3-D models, click on a part number.

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.

For technical drawings and 3-D models, click on a part number.

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.

An aluminum housing makes these digital levels durable and resistant to wear and tear. They are precision-machined for accuracy. The LCD shows angle in degrees, percent of slope, and pitch (in./ft.).

Levels with rubber pads work well in areas where your level might slip.

Precisely measure angles and slope hands-free to help you level equipment. These levels have a digital display, so you can quickly take accurate measurements. The neodymium magnet, a rare earth magnet known for its strong hold, keeps these levels secure even in demanding applications.

Style B levels have an aluminum housing that makes them durable and resistant to wear. Their V-groove provides stability on curved surfaces.

Convenient and easy to use, these digital levels are also built to withstand tough working conditions. Unlike standard l-beam levels, these have a box-style body that resists twisting and deforming. This means their precision-machined surfaces stay flat and accurate even after heavy use. A strong magnet holds these levels still on magnetic surfaces for hands-free checks, even on vibrating equipment. For smooth and slippery surfaces, these levels have removable rubber pads that add friction.

A side- and top-read backlit display along with an overhead inverted display makes these levels easy to read from any angle. Multiple modes allow you to check both level and tilt. You’ll know when your surface is level when you hear a continuous sound. They also have a hold function.

Stick these levels to a magnetic surface to quickly tell if it’s level or to measure its slope. They have a horizontal vial with extra lines to gauge slope in 1/8″ increments, making them useful in applications such as measuring the incline of a pipe that needs to drain. With a strong magnet, they won’t fall off even in demanding applications.

Use their V-grooved side for stability on pipes and other curved surfaces. Their durable aluminum housing stands up to daily wear and tear.

3/4" wd. levels are also known as torpedo levels. They have tapered ends to fit in tight spaces.

A built-in angle indicator gives you precise measurements without the need for separate tools. To find the angle of your surface, rotate the angle indicator vial from 0° to 360° until the bubble is level. These levels also have a dual-view vial, so you can view the plumb vial from the side or use the mirror and window to view the vial from the top. The aluminum housing makes them durable and resistant to wear.

The durable aluminum housing means these levels resist wear. They have precision-machined leveling surfaces to ensure accuracy.

Levels with acrylic vials are more durable than glass vials. However, they can warp or erode from temperature changes and chemicals.

Levels with a pitch gauge read slope in 1/8" increments.

Levels with a dual-view vial let you view the plumb vial from the side or use the mirror and window to view the vial from the top.

Keep your hands free while leveling in tough industrial sites—with a strong magnet, these levels cling to most metallic surfaces even if they’re vibrating. Unlike standard levels with an l-beam design, these levels have a sturdy, box-style body that won’t twist or deform. The surfaces are precision machined, so they stay flat and accurate even after heavy use.

Levels with a pitch gauge have a horizontal vial with extra lines to gauge slope in 1/8” increments. They’re ideal for applications such as measuring the incline of a pipe that needs to drain. These levels also have a dual-view vertical vial, which means you can view the vial from the top or side of the level.

Take precise angle measurements when leveling without a separate tool. To find the angle of your surface, rotate the angle indicator vial from 0° to 360° until the bubble is level. These levels also have a pitch gauge that reads slope in 1/8" increments.

These levels have a strong magnet that holds even on vibrating equipment. And their aluminum housing is durable enough to stand up to daily wear and tear. They have tapered ends that fit into tight spaces. A V-groove creates stability on curved surfaces.

Measure the incline of pipe for drainage with these sturdy levels. They have a pitch gauge that reads slope in 1/8” increments. Designed to stay put on pipe, a V-groove keeps these levels stable on curved surfaces. For even more support, a strong magnet holds them still, even when there’s vibration. Unlike standard levels with an I-beam design, the precision-machined edges won’t twist or deform from rough use. Their tapered ends fit into tight spaces.

Check for level inside machinery and other cramped, dimly lit spaces. These levels have LED lights on each vial—as you rotate the level, the appropriate vial is automatically illuminated. They also shut off automatically to save battery life. The strong magnet holds them in place, even on vibrating equipment. Precision machined from a single block of aluminum, these durable levels won’t dent or break easily. Their tapered billet ends fit into corners and tight spaces.

For accurate readings on curved surfaces, such as pipes and shafts, a V-groove keeps them steady. Use the angular vial to check if conduit is bent at the desired angle, or check pipe drainage with a pitch gauge that shows slope in 1/8" increments.

Simultaneously check if a surface is perfectly vertical or horizontal as well as tilted front-to-back. These levels have multiple vials, including one that plugs into the face, to check surfaces on multiple axes. Stick them to metal magnetic surfaces for quick, hands-free inspection of equipment. A strong magnet keeps them firmly in place, even if there’s vibration. For stability on pipes and other curved surfaces, use the V-grooved side. A durable aluminum housing stands up to daily wear and tear.

Remove the plug vial and these levels become regular compact levels. All vials have four lines to help you level your surface or create a slight pitch for drainage.