Duke Tools 180mm / 7 Inch Aluminium Rafter Square
Duke Tools 180mm Aluminium Carpenter’s Square: Anodised for corrosion resistance, laser-etched markings for precise 90° framing ideal for Australian roofing layouts.
Duke Tools 180mm / 7 Inch Aluminium Carpenter's Square
Precision Aluminium Speed Square by Duke Tools
Product Description
The Duke Tools 180mm / 7 Inch Aluminium Carpenter’s Square serves as a versatile layout tool for Australian residential construction, facilitating accurate angle marking and squaring in timber framing. Constructed from anodised 6063-T6 aluminium alloy (tensile strength 241 MPa, yield strength 214 MPa) with a Type II anodising layer (10-25 µm thick per MIL-A-8625) for superior corrosion resistance in coastal or high-humidity environments, this square maintains dimensional stability across -20°C to 80°C thermal cycles without warping.
Its laser-etched graduations on both faces—offering 0°-90° scales with 1° increments and auxiliary 15°-75° rafter references—ensure readability under 100 lux site lighting, while the integrated metric conversion table supports rapid pitch calculations for common Australian roof spans up to 6 m. The 90° and 45° reference edges, machined to ±0.3° accuracy via CNC processes, align with implied angular tolerances in AS 1684 for frame plumbness (≤4 mm deviation over 2 m height), enabling users to achieve straightness within 4 mm/2 m bow limits and reducing cumulative errors in multi-element assemblies like wall frames or trusses.
Key Features & Benefits
- Anodised 6063-T6 Aluminium Body: Provides a hard oxide surface which is resistant to salt spray for 336+ hours, ideal for outdoor Australian applications without galvanic degradation.
- Dual-Sided Laser Etching: 0.08 mm deep engravings with 0.05 mm line width ensure permanent legibility after 500+ abrasion cycles.
- Precision Angular Accuracy: CNC-machined edges to ±0.3° for 90°/45° references, facilitating frame alignments within NCC-mandated 4 mm/2 m plumbness tolerances.
- Integrated Rafter Tables: Etched metric conversions for 1:12 to 12:12 pitches.
Specifications
| SPECIFICATION | DETAILS |
|---|---|
| Brand | DUKE Tools Perth® |
| SKU | DP052535-B |
| EAN / Barcode | 0662652604137 |
| Warranty Period | 12 Months |
| Warranty Type | Against defects in materials and workmanship |
| Warranty Terms | Refer full Warranty Terms |
| Product Condition | New |
| Overall Size | 180 mm hypotenuse x 180 mm legs, effective marking length 175 mm for spans up to 2 m |
| Product Length (mm) | 180mm |
| Product Width (mm) | 180mm |
| Product Height (mm) | 2.5 mm extruded profile, resisting deflection <0.5 mm under 50 N lateral load |
| Product Weight | 150 grams |
| Material | Anodised 6063-T6 aluminium alloy (Al 98.5%, Mg 0.45-0.9%, Si 0.2-0.6%) for lightweight strength and thermal conductivity of 200 W/m·K |
| Anodising Type | Type II sulfuric acid process, 10-25 µm thickness per MIL-A-8625 for dielectric strength up to 720 V |
| Corrosion Resistance | Withstands 336 hours salt fog exposure |
| Angular Tolerance | ±0.3° across 0°-90° range |
| Markings Depth | Laser-etched to 0.08 mm with 0.05 mm line width for visibility post-wear |
| Scale Resolution | 1° increments on primary edges, 5 mm metric along hypotenuse for hybrid measurements |
| Rafter References | Etched tables for 15°-75° common/hypotenuse ratios |
| Edge Finish | Chamfered 45° bevel (0.8 mm width) to minimise surface scratches on timbers up to 300 HB hardness |
| Colour | Blue-dyed anodising with UV stability for 1,000+ hours exposure |
| Operating Temperature | -20°C to 80°C, with expansion coefficient 23 x 10^-6/°C ensuring <0.1 mm distortion |
Package Contents
1 × Duke Tools 180mm / 7 Inch Aluminium Carpenter’s Square
Product FAQs & Recommended Uses
Get expert advice, in-depth answers, and practical tips to make the most of your tools and gear!
This guide addresses common queries on usage, maintenance and safety. Always consult a professional for complex repairs.
How do I verify the squareness accuracy?
Align the 90° corner against a known straight edge (e.g., machined timber) and scribe two perpendicular lines; rotate 180° and re-scribe—overlaps must stay within 0.5 mm over 180 mm
Is this square suitable for steel framing?
Optimised for timber but usable on light-gauge steel (up to 1.2 mm thick) for 90° checks; chamfered edges prevent scratching zinc coatings (AS 1397), though for heavy sections (>3 mm), pair with a magnetic square to avoid slippage under vibration.
Is this carpenter's square easy to carry around job sites?
Absolutely, at just 150 g and compact 180 mm size, it slips easily into a tool belt or pocket, making it a go-to for quick checks on Australian building sites without adding bulk to your kit.
Why choose Duke Tools over cheaper plastic squares?
Our anodised aluminium version outlasts plastic in everyday knocks and weather, giving you reliable accuracy for years on projects like decks or frames, backed by a satisfaction guarantee for peace of mind
Recommended Uses
- Timber wall framing: Establishing 90° stud.
- Roof truss layout: Marking 30°-45° pitches rafters.
- Decking installation: Squaring joist grids on coastal verandas with galvanised fixings.
- Stair riser gauging: Transferring 34° angles for compliant treads.
- Fence post setting: Ensuring plumb 90° braces in rural hardwood paling fences.
- Shed floor framing: Checking bearer squareness on concrete slabs in backyard projects.
- Cabinet assembly: Precise 90° corner marking for flat-pack kitchens using particleboard.
- Pergola construction: 45° bevel scribing for slatted roofs in garden shade structures.
- Verandah extensions: Layout for eaves and fascia.
- Boat hull framing: Angle transfers on marine plywood for trailerable dinghies.
- Furniture restoration: Repairing mitred joints in antique cedar dining tables.
- Landscaping paths: Marking 90° paver edges for interlocking concrete blocks.
- Solar frame mounting: Squaring panel arrays on Colorbond roofs.
- Arbor building: Hip rafter angles for climbing vine supports in vineyards.
- Pallet upcycling: Straight cuts for raised garden beds from recycled pine.
- Door jamb installation: Ensuring 90° reveals in internal timber linings.
- Gazebo assembly: 45° roof cuts for hexagonal garden pavilions.
- Retaining wall capping: Level marking on sandstone blocks in sloping yards.
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Read MoreShipping FAQs
Fast delivery with orders dispatched the following business day
Where do you ship?
We deliver fast and reliably across Australia, from major cities like Sydney, Melbourne, Brisbane, and Perth to regional and remote areas including Cairns, Alice Springs, and Dubbo. All orders are promptly dispatched from our Cloverdale, WA (6105) warehouse via Australia Post.
What are your shipping costs and options?
Choose the delivery option that suits your needs:
Free Standard Shipping on orders over $99
Standard Shipping: $10.95 flat rate (orders under $99)
Express Shipping: $19.95 flat rate
How long does delivery take?
All orders are dispatched next business day from our Perth warehouse. Estimated delivery times are:
| Area | Standard Shipping | Express Shipping |
|---|---|---|
| Metro (Sydney, Melbourne, Perth, Adelaide) | 3–5 business days | 1–3 business days |
| Regional (Toowoomba, Bendigo, Albany) | 4–8 business days | 2–4 business days |
| Rural (Dubbo, Mt Isa, Katherine) | 6–10 business days | 3–5 business days |
| Remote (Broken Hill, Tennant Creek) | 8–16 business days | 4–6 business days |
Note: Delivery times may vary due to weather, courier delays, or peak seasons.
Want an exact delivery estimate?
Use the Australia Post Delivery Calculator and enter the “From” postcode as 6105 – Cloverdale WA for the most accurate results.
Tracking Your Order
Keep track of your order every step of the way with our Shipment Tracking Service. Receive automatic updates and real-time tracking to ensure a smooth and stress-free delivery experience.
Full Terms and Policies
For detailed shipping policies, see our full Shipping Terms.
Please read our Website Terms and Conditions, Terms of Purchase, Returns Policy, Warranty Terms and Conditions, and Privacy Policy — they govern your purchases and use of Duke Warehouse Perth.
Questions? We’re here to help.
Our friendly team at Duke Warehouse Perth is ready to assist you. Reach out anytime:
Call: (08) 6249 0671 or Email: perth@dukewarehouse.com.au
We aim to respond promptly and make your shopping experience seamless.
Warranty and Returns
Frequently asked questions.
What warranty do you offer?
All products from Duke Warehouse Perth come with a 12-month warranty against defects in materials and workmanship, in addition to your rights under the Australian Consumer Law (ACL).
If a product is defective, we will repair, replace, or refund it depending on the fault and ACL requirements. View our Warranty Terms for full details.
What are my rights under Australian Consumer Law?
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage.
You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
What if my item is faulty or damaged?
We package items securely to minimise transit damage. If your order arrives damaged or is faulty:
Visibly Damaged Parcels: Refuse delivery and ask the courier to return it to us, or contact us immediately.
Damage Discovered After Delivery: Notify us as soon as possible and within 7 days of recieving the package.
What if I change my mind?
Under the Australian Consumer Law (ACL), we are not required to offer refunds or exchanges for change-of-mind purchases (e.g., choosing the wrong item or finding it cheaper elsewhere). As a small business, we generally do not accept such returns but may offer store credit in exceptional circumstances at our discretion. Contact us to discuss options.
We encourage you to review product specifications before purchasing and contact us with any questions before ordering.
Full Terms and Policies
Please read our Website Terms and Conditions, Terms of Purchase, Returns Policy, Warranty Terms and Conditions, and Privacy Policy — they govern your purchases and use of Duke Warehouse Perth.
Questions? We’re here to help.
Please contact us if you have any queries
Call: (08) 6249 0671
Email: perth@dukewarehouse.com.au
Why Choose Duke
When you shop with Duke, you’re supporting a small Perth-based company that puts customers first.
Affordable Prices & Great Value
We believe quality tools shouldn’t cost a fortune. That’s why we offer premium-grade power tools, hand tools, and accessories at highly competitive prices — giving you professional performance without the premium price tag. Every order is designed to deliver maximum value, so you get the most out of your investment.
Trusted by Aussies Nationwide
Thousands of customers across Australia trust Duke Warehouse Perth for reliable tools, excellent service, and unbeatable value. Whether you’re a professional tradesperson, workshop owner, or DIY enthusiast, you can count on us for dependable products and support from a team that understands the tools you rely on.
Huge Range of Tools
Whatever the project, we’ve got you covered. Our extensive range includes hand tools, power tools, chrome socket sets, router bit sets, drill accessories, and more — everything you need to tackle DIY tasks, workshop projects, and heavy-duty professional jobs. We constantly update our range to ensure you have access to the latest and most reliable tools on the market.
12-Month Warranty
Every product we sell is backed by a 1-year warranty, giving you total peace of mind with every purchase. If a tool develops a fault due to defects in materials or workmanship, we’ll repair, replace, or refund it — it’s all part of our commitment to quality and customer satisfaction.
Fast Australia-Wide Delivery
We know timing matters. That’s why we dispatch orders the next business day from our Perth warehouse and offer express shipping so you can get to work sooner. With delivery to Sydney, Melbourne, Brisbane, Adelaide, Cairns, and beyond, our partnership with Australia Post ensures your tools arrive quickly, securely, and right to your door — no matter where you are in Australia.
Safe & Secure Shopping
Shop with complete confidence knowing your personal and payment details are protected. Our website uses SSL encryption and trusted, secure payment gateways to keep your data safe from checkout to delivery. We’re committed to creating a secure online shopping environment for every customer.
Australian Owned & Operated
Proudly family-owned and operated in Perth, Duke Warehouse is built on strong Australian values — honest pricing, reliable products, and exceptional service. Every order is packed and shipped with care, and every customer is treated like part of the Duke family. Supporting us means supporting a local business that genuinely cares about its customers.
Questions? We’re here to help.
Our friendly team at Duke Warehouse Perth is ready to assist you. Reach out anytime:
Call: (08) 6249 0671
Email: perth@dukewarehouse.com.au
We aim to respond promptly and make your shopping experience seamless.
