► Combination Squares

Versatile Measuring & Marking Gear for the Job Site When you need one tool that can do it all for layout work, a combination square is hard to beat. These precision tools combine a straightedge rule with a durable, adjustable head, giving tradies the ability to measure, mark, and check...

Versatile Measuring & Marking Gear for the Job Site

When you need one tool that can do it all for layout work, a combination square is hard to beat. These precision tools combine a straightedge rule with a durable, adjustable head, giving tradies the ability to measure, mark, and check angles without swapping between different gauges. Whether it’s setting out timber framing, checking the squareness of a steel frame, marking dovetails, or gauging depth on a joinery job, a combination square delivers accuracy you can see and trust.

Bahco & OX Tools combination squares are engineered for the real-world conditions of Australian job sites. Etched steel blades stay legible through years of use, even after exposure to dust, grit, and handling. The locking mechanisms in their heads are built to stay solid, ensuring your 90° and 45° reference points don’t shift under pressure. For carpenters, metal fabricators, and shop fitters, they’re a compact solution that replaces multiple separate layout tools.

What’s in This Collection:
► Standard Combination Squares
‣ Rugged steel rules with etched markings & precision-ground heads
► Adjustable Combination Sets
‣ Multi-head kits for marking, angle checking & depth measurement
► Metric & Imperial Blades
‣ Dual-scale rules for local & international project requirements
► Heavy-Duty Cast Head Models
 ‣ Built for daily trade use in demanding site conditions

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  • Starrett - Combination Square Cast Iron Head 6in 4r Grad | 11h-6-4r
    Starrett - Combination Square Cast Iron Head 6" 4R Graduation | 11H-6-4R
    Starrett – Combination Square Cast Iron Head 6in 4R Grad | 11H-6-4R The Starrett Combination Square 6in 4R provides reliable measurement for everyday layout and inspection tasks. Built with a durable cast iron head and easy-to-read graduations, it ensures consistent accuracy on the job....
    $276.81
    $276.81
  • Starrett - Combination Square Cast Iron Head 6in 16r Grad | 11h-6-16r
    Starrett - Combination Square Cast Iron Head 6" 16R Graduation | 11H-6-16R
    Starrett – Combination Square Cast Iron Head 6in 16R Grad | 11H-6-16R The Starrett Combination Square 6in 16R delivers precise measurement for detailed layout and inspection tasks. With fine 16R graduations and a durable cast iron head, it ensures high accuracy in workshop applications....
    $316.89
    $316.89
  • Starrett - Combination Square Cast Iron Head 4in 4r Grad | 11h-4-4r
    Starrett - Combination Square Cast Iron Head 4" 4R Graduation | 11H-4-4R
    Starrett – Combination Square Cast Iron Head 4in 4R Grad | 11H-4-4R The Starrett Combination Square 4in 4R is perfect for small, precise layout and inspection work. Compact and durable, it provides reliable measurement in tight spaces and detailed applications. ► Key Features 4...
    $254.90
    $254.90
  • Starrett - Combination Square Cast Iron Head 24in 4r Grad | 11h-24-4r
    Starrett - Combination Square Cast Iron Head 24" 4R Graduation | 11H-24-4R
    Starrett – Combination Square Cast Iron Head 24in 4R Grad | 11H-24-4R The Starrett Combination Square 24in 4R provides reliable measurement for larger layout and inspection tasks. With easy-to-read 4R graduations and a durable cast iron head, it delivers consistent accuracy on the job....
    $538.98
    $538.98
  • Starrett - Combination Square Cast Iron Head 24in 16r Grad | 11h-24-16r
    Starrett - Combination Square Cast Iron Head 24" 16R Graduation | 11H-24-16R
    Starrett – Combination Square Cast Iron Head 24in 16R Grad | 11H-24-16R The Starrett Combination Square 24in 16R delivers extended measurement capability with fine precision graduations. Designed for larger layout work, it ensures accurate marking and alignment across longer surfaces. ► Key Features 24...
    $575.40
    $575.40
  • Starrett - Combination Square Cast Iron Head 18in 4r Grad | 11h-18-4r
    Starrett - Combination Square Cast Iron Head 18" 4R Graduation | 11H-18-4R
    Starrett – Combination Square Cast Iron Head 18in 4R Grad | 11H-18-4R The Starrett Combination Square 18in 4R delivers reliable layout and measurement for everyday workshop tasks. Built with a cast iron head and clear 4R graduations, it provides easy-to-read measurements for accurate marking...
    $480.69
    $480.69
  • Starrett - Combination Square Cast Iron Head 18in 16r Grad | 11h-18-16r
    Starrett - Combination Square Cast Iron Head 18" 16R Graduation | 11H-18-16R
    Starrett – Combination Square Cast Iron Head 18in 16R Grad | 11H-18-16R The Starrett Combination Square 18in 16R delivers precise layout and measurement for workshop and site applications. Featuring a durable cast iron head and fine 16R graduations, it ensures accurate marking, squaring, and...
    $517.14
    $517.14
  • Starrett - Combination Square Cast Iron Head 12in 4r Grad | 11h-12-4r
    Starrett - Combination Square Cast Iron Head 12" 4R Graduation | 11H-12-4R
    Starrett – Combination Square Cast Iron Head 12in 4R Grad | 11H-12-4R The Starrett Combination Square is a reliable tool for precise measurement and layout in workshop and site applications. Featuring a cast iron head and 4R graduations, it ensures durability and accuracy for...
    $287.71
    $287.71
  • Starrett - 11h-12-4rcombination Square Cast Iron Head 12in 16r Grad | 11h-12-16r
    Starrett - 11H-12-4RCOMBINATION Square Cast Iron Head 12" 16R Graduation | 11H-12-16R
    Starrett – Combination Square Cast Iron Head 12in 16R Grad | 11H-12-16R The Starrett Combination Square is a precision layout and measuring tool designed for accuracy in workshop and construction tasks. Featuring a cast iron head and 16R graduations, it provides reliable measurement and...
    $393.32
    $393.32

Built for Accuracy in Every Trade

From fine joinery to heavy structural steel, Bahco & OX Tools combination squares are built to deliver repeatable precision. The etched markings won’t fade, the robust head mechanisms stay aligned, and the ergonomic designs make them easy to handle in gloves or bare hands. They’re a mainstay for cabinetmakers, roofers, steelworkers, and general builders who value having one layout tool that covers multiple tasks. With Industrial Shed’s trade pricing, bulk supply capability, and same-day dispatch, you can equip your crew with proven, site-tough gear that keeps jobs on schedule.

► Multi-function design saves time & reduces tool changes
► Heavy-duty build for long service life in trade environments
► Backed by trusted brands for proven accuracy & durability

Frequently Asked Questions

Most combination squares come in 150 mm, 300 mm, and 600 mm lengths, with larger models for specialist work.

Yes—combination squares are trusted for confirming true 90° and 45° angles on corners & edges.

Many models feature a built-in scribe for marking & a vial for quick levelling checks.

Brands

Accud

Accud
Bahco

Bahco
Groz

Groz
Kincrome

Kincrome
OX Tools

OX Tools
Precision Specialty Tools

Precision Specialty Tools
Spear & Jackson

Spear & Jackson
Starrett

Starrett
Sterling

Sterling
Toledo

Toledo
Trax

Trax