McMaster-Carr logo
    Filter by
    System of Measurement
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Number of Shapes
    Blade Graduations
    Blade Length
    Numeric Graduations
    Arm Length
    Edge Shape
    Rolling Scale Graduations
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    38 Products

    Technical Symbol Drafting Stencils

    Image of Product. Front orientation. Stencils. Technical Symbol Drafting Stencils, Electrical/Electronic.
    Image of Product. Front orientation. Stencils. Technical Symbol Drafting Stencils, Flow.
    Image of Product. Front orientation. Stencils. Technical Symbol Drafting Stencils, Flowchart.

    Electrical/Electronic

    Flow

    Flowchart

    Image of Product. Front orientation. Stencils. Technical Symbol Drafting Stencils, Heating and Air Conditioning.
    Image of Product. Front orientation. Stencils. Technical Symbol Drafting Stencils, House and Plumbing.
    Image of Product. Front orientation. Stencils. Technical Symbol Drafting Stencils, Pipe Fittings.

    Heating and Air

    Conditioning

    House and Plumbing

    Pipe Fittings

    Image of Product. Front orientation. Stencils. Technical Symbol Drafting Stencils, Sheet Metal Conduit.

    Sheet Metal Conduit

    Trace technical symbols for pipe fitting, electrical work, plumbing, and more.
    Overall
    Technical Stencil Type
    Description
    Lg.
    Wd.
    Material
    Each
    Electrical/ElectronicSymbols, contacts, switches, terminals, etc. Conform to ANSI Y32.2 (Set of 3)8"3 3/4", 4 3/8", 5"Plastic0000000000000
    FlowFor pipe and plumbing layout: gas, oil, water, and chemical10 1/8"2 3/4"Plastic000000000000
    FlowchartComputer flow symbols conform to ANSI X3.5 and ISO 102810"4"Plastic000000000000
    Heating and Air ConditioningSymbols conform to ASA Z32.2.3 and 32.2.47"5"Plastic000000000000
    House and PlumbingHouse plan and plumbing fixtures5"7"Plastic000000000000
    Pipe FittingsSymbols for pipe OD, end bell, flange, and fittings8"5"Plastic000000000000
    Sheet Metal ConduitCross sections for heating and air conditioning9 3/4"5 1/16"Plastic000000000000
     

    Symbol Drafting Stencils

    Image of Product. Front orientation. Stencils. Symbol Drafting Stencils, Circle.
    Image of Product. Front orientation. Stencils. Symbol Drafting Stencils, Diamond, Triangle.
    Image of Product. Ellipse. Front orientation. Stencils. Symbol Drafting Stencils, Ellipse (20°, 30°, 40°, and 50° Projections).
    Image of Product. Front orientation. Stencils. Symbol Drafting Stencils, Arrow, Circle, Hexagon, Square, Triangle.

    Circle

    Diamond, Triangle

    Ellipse

    Arrow, Circle, Hexagon,

    Square, Triangle

    Image of Product. Isometric Ellipse. Front orientation. Stencils. Symbol Drafting Stencils, Isometric Ellipse (25°, 35°, 45°, and 60° Projections).
    Image of Product. Front orientation. Stencils. Symbol Drafting Stencils, Square.
    Image of Product. Circle, Hexagon, Isometric Ellipse. Front orientation. Stencils. Symbol Drafting Stencils, Circle, Hexagon, Isometric Ellipse (25°, 35°, 45°, and 60° Projections), Square, Triangle.

    Isometric

    Ellipse

    Square

    Circle, Hexagon, Isometric

    Ellipse

    Trace symbols such as circles, polygons, arrows, and ellipses.
    Overall
    Symbol
    Shape Size
    No. of
    Shapes
    Lg.
    Wd.
    Material
    Each
    Inch
    Circle1/16" to 1 3/8"397 1/4"4"Plastic0000000000000
    Circle1/16" to 3"4410"7"Plastic000000000000
    Circle1 1/4" to 3 1/2"1311 1/2"8 3/4"Plastic000000000000
    Diamond, Triangle3/32" to 1"339 3/8"5 1/4"Plastic000000000000
    Ellipse (20°, 30°, 40°, and 50° Projections)1/4" to 1 1/2"6111"5"Plastic000000000000
    Arrow, Circle, Hexagon, Square, Triangle1/16" to 1 1/2"568"5 7/8"Plastic000000000000
    Isometric Ellipse (25°, 35°, 45°, and 60° Projections)1/4" to 1 1/2"6011"5"Plastic000000000000
    Square1/16" to 1 1/2"429 3/8"5"Plastic000000000000
     
    Metric
    Circle2 mm to 34 mm419"4 5/8"Plastic000000000000
    Circle2 mm to 48 mm4610 1/8"7 5/8"Plastic000000000000
    Circle25 mm to 85 mm1312"8 13/16"Plastic000000000000
    Circle, Hexagon, Isometric Ellipse (25°, 35°, 45°, and 60° Projections), Square, Triangle2 mm to 30 mm819 7/8"5 7/8"Plastic000000000000
     

    Rolling Parallel Rules

    Image of Product. Front orientation. Parallel Rules. Rolling Parallel Rules.
    A rule, compass, protractor, and template all in one tool.
    Graduations
    Head
    Material
    Blade
    Lg.
    Max. Circle
    Dia.
    Blade
    Rolling
    Scale
    Each
    Plastic12"24"1/16", 1 mm1/32", 1 mm000000000000

    Character Drafting Stencils

    Image of Product. Front orientation. Stencils. Character Drafting Stencils.
    Trace numbers and letters in three different heights.
    Overall
    Font
    Lg.
    Wd.
    Letter Ht.
    Material
    Each
    Modern Light11"3 1/4"1/8", 3/16", 1/4"Plastic00000000000
    Modern Bold10 1/2"3 1/4"1/8", 3/16", 1/4"Plastic0000000000
     

    Rulers

    Your go-to rulers for everyday measuring. Whether metal for durability or wood for a classic feel, our rulers measure up to most tasks, from woodwork to textiles to rough machining.
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Rulers. Rulers, Corrosion-Resistant Stainless Steel.
    Our most corrosion-resistant rulers. These rulers won't rust when rinsed, rained on, or wiped down with degreasers or cleaning solutions. They're hardened to prevent dents and scratches, so you can trust they'll last for years to come. Etched and filled with black ink, their graduations won't rub off like printed graduations can.
    Length—For easy handling and storage, rulers that are 96" or longer come in multiple pieces that line up to create a complete ruler.
    Rulers
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Wd.
    Thk.
    Each
    Inch
     
    Left-to-Right Reading Direction
    12"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/50" (1/10")1"3/64"000000000000
     

    Drafting Rulers

    Image of Product. Front orientation. ZoomedIn view. Rulers. Drafting Rulers, Flat.
    Image of Product. Side2 orientation. Rulers. Drafting Rulers, Triangle.

    Flat

    Triangle

    Sketch buildings, roads, and other life-size objects to scale. These rulers feature the standard scales used by architects or engineers. All have beveled edges, so you can be confident your lines will be accurate and consistent no matter what angle you view the ruler from.
    Triangle—To quickly identify the scale you need, these rulers have a different-colored groove on each of their three sides.
    Measurement Scale Type
    Scale
    Material
    Blade
    Lg.
    Each
    Inch
     
    Flat
    Architects'1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/2, 3Plastic12"000000000000
     
    Triangle
    Architects'3/32, 1/8, 3/16, 1/4, 3/8, 1/2, 3/4, 1, 1 1/2, 3, 16Plastic12"00000000000
    Engineers'10ths, 20ths, 30ths, 40ths, 50ths, 60thsPlastic12"00000000000
     
    Metric
     
    Triangle
    Architects'1:500, 1:400, 1:300, 1:250, 1:200, 1:100Plastic30 cm000000000000
    Architects', Engineers'1:125, 1:100, 1:75, 1:50, 1:25, 1:20Plastic30 cm000000000000
     

    Pocket Drafting Rulers

    Image of Product. Front orientation. ZoomedIn view. Rulers. Pocket Drafting Rulers, Triangle.

    Triangle

    For scaled-down drawings on the go, these rulers are no bigger than a pen to slip into your pocket. Sketch everything from roads to buildings to floor plans—they include the standard scales for architects or engineers. All have beveled edges, so you can be confident your lines will be accurate and consistent no matter what angle you view the ruler from.
    Triangle—To quickly identify the scale you need, these rulers have a different-colored groove on each of their three sides.
    Measurement Scale Type
    Scale
    Material
    Blade
    Lg.
    Each
    Inch
     
    Triangle
    Architects'3/32, 1/8, 3/16, 1/4, 3/8, 1/2, 3/4, 1, 1 1/2, 3, 16Aluminum
    6"0000000000000
    Engineers'10ths, 20ths, 30ths, 40ths, 50ths, 60thsAluminum
    6"000000000000
     
    Inch/Metric
     
    Triangle
    Architects', Engineers'1/8, 1/4, 16, 1:500, 1:100, 10ths, 50thsAluminum
    6"000000000000
     

    Angle Transfers

    Image of Product. Front orientation. Angle Transfers. Angle Transfers.
    Duplicate or transfer any angle. Adjust the blades to an angle and tighten the nut to lock them in place. These transfers are also known as bevel squares and sliding bevels.
    Blade
    Handle
    Lg.
    Wd.
    Material
    Lg.
    Material
    Each
    10"1 1/8"Stainless Steel
    5 1/2"Wood000000000000

    Drafting Curves

    Image of Product. Front orientation. Drafting Curves. Drafting Curves, Plain Curve.

    Plain Curve

    Image of Product. Front orientation. Drafting Curves. Drafting Curves, Graduated Curve.

    Graduated Curve

    Form custom shapes for drawing.
    Lg.
    Material
    Graduation Marks
    (Location)
    Min. Curve
    Radius
    Each
    Plain Curve
    12"Plastic1"0000000000000
    30"Plastic1"000000000000
     
    Graduated Curve
    12"Plastic1/16" (Front), 1 mm (Back)1"000000000000
    20"Plastic1/16" (Front), 1 mm (Back)1"000000000000
     

    French Curves

    Image of Product. Style A. Front orientation. Drafting Curves. French Curves.
    Image of Product. Style B. Front orientation. Drafting Curves. French Curves.
    Image of Product. Style C. Front orientation. Drafting Curves. French Curves.

    Style A

    Style B

    Style C

    Image of Product. Style D. Front orientation. Drafting Curves. French Curves.
    Image of Product. Style E. Front orientation. Drafting Curves. French Curves.
    Image of Product. Style 
F. Front orientation. Drafting Curves. French Curves.

    Style D

    Style E

    Style F

    Image of Product. Style 
G. Front orientation. Drafting Curves. French Curves.
    Image of Product. Style 
H. Front orientation. Drafting Curves. French Curves.

    Style G

    Style H

    Trace smooth curves.
    No. of
    Pieces
    Includes
    Material
    Each
    8Styles A, B, C, D, E, F, G, HPlastic000000000000
     

    Multi-Angle Transfers

    Image of Product. Shown in Multiple Configurations. Front orientation. Contains MultipleImages. Angle Transfers. Multi-Angle Transfers.

    Shown in Multiple Configurations

    Transfer multiple angles, draw parallel lines, or create a template to make repeated patterns and measurements. Adjust the four arms on these transfers to the desired shape, and tighten the nuts to lock them in place. They’re often used as layouts for stairs and window sills or patterns in tile.
    Blade
    No. of
    Arms
    Arm
    Length
    Numeric
    Graduations
    Wd.
    Material
    Color
    Graduation
    Type
    Graduations
    Graduation
    Color
    Each
    44"/12 cm
    10"/25 cm
    1"/1 cm
    1"/1 cm
    1"Aluminum
    BlackEtched1/16", 1 mmWhite00000000000000
    back to top