Shop drafting parallel bars designed for accurate, consistent horizontal line work on drawing boards and drafting tables. These precision systems function as guided straightedges, helping maintain alignment and control for technical drawing, drafting, and layout work.
If you are replacing an older system, such as a Mayline parallel bar, the Alvin & Pacific Arc drafting parallel bars provide a reliable replacement. If your existing system only needs repair, you can find compatible components in our parallel bar replacement hardware section.
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Paral-Liner Parallel Straightedges
Alvin Drafting$171.00 - $231.00The Alvin Paral-Liner Parallel Straightedge is a professional top-mounted drafting bar designed for precise ruling, technical drawing, drafting, and layout work. Built for both drafting tables and portable drawing boards, the Paral-Liner combines smooth... -
Pro-Draft Parallel Bar
Martin Universal$184.70 - $219.80The Martin® Pro-Draft Professional Parallel Straightedge comprises cutting-edge technology making the premier straightedge in its class. It features an aluminum body for strength and stability, anti-warp cast acrylic bottom making it suitable for both... -
Para-Liner Deluxe Parallel Straightedges
Alvin Drafting$173.50 - $277.80A deluxe version of the popular Alvin Paral-Liner series, this straightedge features a comfort grip bar for precise control of movement. Quick and detailed sketching is facilitated by retractable rollers that secure the blade for accurate drawing. Smooth... -
Professional Parallel Bars
Pacific Arc$154.80 - $218.50The Pacific Arc Straightedge Parallel Bars are perfect for drafting, engineering and construction applications.Features: Available in 4 lengths: 30", 36", 42" or 48"Professional quality, top-mounted barRigid phenolic construction with a black satin...
Drafting Parallel Bars
Drafting parallel bars are precision, board-mounted systems designed to maintain a straight, level reference line across the entire drawing surface. All parallel bars serve the same core function—providing accurate horizontal alignment for technical drawing, drafting, and layout work.
The primary differences between models come down to brand, size, and overall build quality. Professional-grade, top-mounted parallel bars are designed for smooth, consistent movement and long-term durability, making them a reliable choice for architects, engineers, students, and design professionals.
Choosing the Right Parallel Bar
When selecting a drafting parallel bar, consider the size of your drawing board, mounting compatibility, and how the system will be used. A properly fitted parallel bar ensures smooth movement and consistent line accuracy across the entire drawing surface.
If you are replacing an older system, such as a Mayline parallel bar or Mayline drafting parallel bar, it is important to confirm that the new system will fit your board dimensions and mounting style.
Why Use a Parallel Bar
Drafting parallel bars provide a stable, guided straightedge that moves evenly across the board, helping maintain precise horizontal alignment without shifting. This improves efficiency and accuracy compared to using a loose straightedge.
These systems are widely used for architectural drafting, engineering drawings, technical layouts, and classroom instruction where consistent line quality is essential.
Complete Your Drafting Setup
Drafting parallel bars are typically used with drawing boards and drafting tables, along with scales, triangles, and other drafting tools to create a complete and efficient workspace.
Looking for a complete solution? You can also purchase drafting boards with parallel bars already attached for a ready-to-use setup.
Shop Drafting Board with Parallel Bar | Shop Drafting Board Covers | Shop Drafting Tools
