McMaster-Carr logo
    Filter by
    Body Diameter
    Tip Shape
    Manufacturer Model Number
    Display Type
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Measuring Increments
    Ball Diameter
    Mounting Shank Diameter
    Mounting Shank Length
    Dial Diameter
    Enclosure Rating
    Industrial Info Compare
    Counting Direction
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    24 Products

    Edge Finders

    Image of Product. Front orientation. Edge Finders. Edge Finders, Style A.
    Image of Product. Front orientation. Edge Finders. Edge Finders, Style B.
    Image of Product. Front orientation. Edge Finders. Edge Finders, Style C.
    Image of Product. Front orientation. Edge Finders. Edge Finders, Style D.
    Image of Product. Front orientation. Edge Finders. Edge Finders, Style E.

    Style

    A

    Style

    B

    Style

    C

    Style

    D

    Style

    E

    Locate edges, shoulders, center points, and lines on your workpiece.
    Style
    Tip Shape (Tip
    Dia.)
    Body
    Dia.
    Overall
    Lg.
    Material
    Each
    ABarrel (0.5")1/2"3 3/16"Steel000000000000000
    ABarrel (10 mm)10 mm3 1/4"Steel00000000000000
    BBarrel (0.2"), Point1/2"3 1/4"Steel00000000000000
    CBarrel (0.2", 0.5")1/2"3 3/16"Steel00000000000000
    DBarrel (0.2")3/8"3"Steel00000000000000
    DBarrel (0.2")1/2"3"Steel00000000000000
    EBarrel (10 mm)10 mm3 1/4"Steel00000000000000

    Starrett Edge Finders

    Image of Product. Front orientation. Edge Finders. Starrett Edge Finders, Style A.
    Image of Product. Front orientation. Edge Finders. Starrett Edge Finders, Style B.

    Style

    A

    Style

    B

    Locate edges, shoulders, center points, and lines on your workpiece.
    Style
    Tip Shape (Tip
    Dia.)
    Body
    Dia.
    Overall
    Lg.
    Mfr. Model
    No.
    Material
    Each
    ABarrel (0.2")3/8"2 1/2"827ASteel000000000000000
    ABarrel (6 mm)10 mm3 1/8"827MASteel00000000000000
    BBarrel (0.2"), Point1/2"3 5/16"827BSteel00000000000000

    Audible Edge Finders

    Image of Product. Front orientation. Edge Finders. Audible Edge Finders.
    These make a distinct sound when the tip runs concentric with the shank (for edge positioning; not for center points).
    Tip Shape (Tip
    Dia.)
    Body
    Dia.
    Overall
    Lg.
    Material
    Each
    Barrel (0.2")3/8"2 7/8"Steel00000000000000
    Barrel (0.2")1/2"2 7/8"Steel0000000000000

    Easy-View Electronic Edge Finders

    Image of Product. Front orientation. Edge Finders. Easy-View Electronic Edge Finders.
    A bulb lights up to give you 360° visibility when positioning work surfaces and tools.
    Note: These items will not work with nonconductive materials such as plastic and wood or with rotating surfaces such as spinning wheels.
    Tip
    Dia.
    Body
    Dia.
    Overall
    Lg.
    Accuracy
    Material
    Batteries
    Included
    Each
    0.2"1/2"3 15/16"±0.0005"Stainless Steel
    		Yes0000000000000

    Machine Tool Indicators

    Find the exact edge of a workpiece without math or guesswork to quickly align your machining setup. Unlike most edge finders, these indicators don't require you to monitor the contact point's position and then add or subtract its diameter. When the display shows zero, that's your edge. These indicators move along three axes, so you can also use them to measure part dimensions, check surface flatness, and locate the centers of holes. The display swivels, eliminating the need to lean into your machine or set up mirrors to measure the back of your part.
    Insert these indicators into your CNC or manual milling machine, adjust the set screws at the top to calibrate them, and they're ready to go. To stop the indicator from breaking, the contact point has a ceramic body that fractures if it collides with your part. Just screw on a new contact point to replace it without having to re-calibrate.
    Dial Display
    Image of Product. Front orientation. Machine Tool Indicators. Dial Display.
    Measuring
    Dial
    Mounting
    Shank
    Contact Point
    Distance
    Increments
    Accuracy
    Dia.
    Reading
    Dia.
    Lg.
    Dia.
    Lg.
    Mounting Thread
    Size
    Material
    Overall
    Lg.
    Enclosure
    Rating
    Each
    0" to 0.15"0.0005"±0.0005"2.6"0-50
    		3/4"2"0.2"1"M3 × 0.5 mmStainless Steel
    		6.37"IP67
    		00000000000000
    0" to 0.15"0.001"±0.001"1.92"0-50
    		0.39"1"0.2"1"M3 × 0.5 mmStainless Steel
    		4.756"IP67
    		0000000000000
    Machine Tool Indicator Contact Points
    Image of Product. Front orientation. Contains Annotated. Machine Tool Indicator Contact Points.
    2.6" Long—These contact points give you more reach than 1" long contact points for measuring deep holes and recesses.
    Mounting Thread
    Size
    Lg.
    Ball
    Dia.
    Material
    Body
    Material
    Each
    M3 × 0.5 mm1"0.2"Stainless Steel
    		Ceramic0000000000000
    M3 × 0.5 mm2.6"0.4"Stainless Steel
    		Ceramic000000000000
    LCD Digital Display
    Image of Product. Front orientation. Machine Tool Indicators. Digital Display.
    These indicators have zero-position memory, also called absolute (ABS) positioning, which saves their position even when turned off. Press the button to set them to zero and start measuring at any point. The large numbers on the display are easy to read from far away, such as when mounted at the center of a large CNC machine.
    Machine Tool Indicators
    Replacement
    Batteries
    Measuring
    Mounting
    Shank
    Contact Point
    Distance
    Increments
    Accuracy
    Dial
    Dia.
    Dia.
    Lg.
    Dia.
    Lg.
    Mounting Thread
    Size
    Material
    Overall
    Lg.
    Batteries
    Included
    Enclosure
    Rating
    Each
    Pkg.
    Qty.
    Pkg.
    0" to 0.15"0.00005"±0.0002"2.6"3/4"2"0.2"1"M3 × 0.5 mmStainless Steel
    		6.37"YesIP64
    		00000000000000001000000000000
    Machine Tool Indicator Contact Points
    Image of Product. Front orientation. Contains Annotated. Machine Tool Indicator Contact Points.
    2.6" Long—These contact points give you more reach than 1" long contact points for measuring deep holes and recesses.
    Mounting Thread
    Size
    Lg.
    Ball
    Dia.
    Material
    Body
    Material
    Each
    M3 × 0.5 mm1"0.2"Stainless Steel
    		Ceramic0000000000000
    M3 × 0.5 mm2.6"0.4"Stainless Steel
    		Ceramic000000000000

    Starrett Swiveling Machine Tool Indicator Tip Sets

    Image of Product. Front orientation. Machine Tool Indicator Contact Points. Starrett Swiveling Machine Tool Indicator Tip Sets.
    Determine tool spindle position in relation to work surface, layout lines, holes, and slots. Also known as wiggler sets. Attachments are interchangeable.
    Includes
    Material
    Each
    0.10" Diameter Disc Contact, 0.25" Ball Contact, Chuck, Needle Point, Offset Indicator HolderSteel0000000000000

    Height-Sensing Edge Finders

    Image of Product. Front orientation. Edge Finders. Height-Sensing Edge Finders.
    Measure and set cutting tool height. This tool has a highly perceptive sensing system with a spring-loaded probe to allow for overrun without breaking. A bulb lights up to give you 360° visibility when positioning work surfaces and tools.
    Note: This item will not work with nonconductive materials such as plastic and wood or with rotating surfaces such as spinning wheels.
    Tip
    Dia.
    Body
    Dia.
    Overall
    Lg.
    Accuracy
    Material
    Batteries
    Included
    Each
    0.31"1"2"±0.0002"SteelYes00000000000000

    Machine Tool Indicator Contact Points

    Image of Product. Front orientation. Contains Annotated. Machine Tool Indicator Contact Points.
    Mounting Thread
    Size
    Lg.
    Ball
    Dia.
    Material
    Body
    Material
    Each
    M3 × 0.5 mm1"0.2"Stainless Steel
    		Ceramic0000000000000
    M3 × 0.5 mm2.6"0.4"Stainless Steel
    		Ceramic000000000000

    Precision Easy-View Electronic Edge Finders

    Image of Product. Front orientation. Edge Finders. Precision Easy-View Electronic Edge Finders.
    These have a highly perceptive sensing system with a spring-loaded probe to allow for overrun without breaking. A bulb lights up to give you 360° visibility when positioning work surfaces and tools.
    Note: These items will not work with nonconductive materials such as plastic and wood or with rotating surfaces such as spinning wheels.
    Tip
    Dia.
    Body
    Dia.
    Overall
    Lg.
    Accuracy
    Material
    Batteries
    Included
    Each
    0.2"1/2"4 1/8"±0.0002"SteelYes00000000000000
    0.4"3/4"4 1/4"±0.0002"SteelYes0000000000000

    Plunger-Style Edge Finders

    Image of Product. Front orientation. Edge Finders. Plunger-Style Edge Finders.
    Locate the edge of a workpiece in your CNC machine without running the spindle. These edge finders mount in the collet or chuck of your spindle but don't spin, so you can keep the machine doors open for a clear line of sight while you position them. Compress the plunger against your workpiece and move it toward the edge. The plunger will drop and click into its full position, indicating it has reached the edge.
    Tip Shape (Tip
    Dia.)
    Body
    Dia.
    Overall
    Lg.
    Accuracy
    Material
    Each
    Barrel (0.4")3/8"3 1/8"±0.0005"Steel0000000000000
    back to top