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39% cheaper than the £22.78 average across 6 retailers
Price shown includes VAT.
MyDIY £13.84; average of 6 retailers £22.78; you save £8.94.
Cheapest
|
£13.84 |
|---|---|
Travis Perkins
|
£13.94 |
Huws Gray
|
£19.19 |
Jewson
|
£19.72 |
Wickes
|
£24.00 |
MKM
|
£27.83 |
Screwfix
|
£31.99 |
You save £8.94 on the £22.78 average across 6 retailers
Available to order
Accurate measuring, marking and alignment are essential for achieving clean, professional results in carpentry, joinery and general DIY projects. A 300mm Combination Square is a versatile measuring tool designed to help check angles, mark straight lines and transfer measurements across timber and other suitable materials.
Featuring an adjustable sliding head and a 300mm graduated rule, the combination square can be positioned to suit different measuring and marking tasks. The adjustable design makes it particularly useful for setting consistent distances from an edge, checking the squareness of joints and marking cutting lines before sawing or drilling.
The square provides convenient 90-degree and 45-degree reference angles, making it ideal for checking right angles, marking mitres and setting out timber components. Its sliding head can also be used as a depth or height reference, allowing measurements to be transferred accurately between workpieces.
With its practical 300mm (12-inch) rule, this combination square offers a useful measuring range while remaining compact enough for everyday use in workshops, on building sites and around the home.
A valuable addition to any toolbox, it is particularly useful for carpenters, joiners, cabinet makers, builders and DIY enthusiasts who need a reliable, multipurpose tool for routine measuring and layout work.
Typical Uses
Measuring and marking timber
Checking 90-degree square angles
Marking 45-degree mitre cuts
Setting consistent distances from edges
Measuring depths and heights
Setting out joints and fixings
Carpentry and joinery projects
General building, workshop and DIY tasks
Product: Combination Square
Rule Length: 300mm / Approximately 12in
Tool Type: Adjustable Measuring and Marking Square
Design: Graduated Rule with Sliding Head
Reference Angles: 90° and 45°
Application: Measuring, Marking, Squaring and Depth Checking
Suitable for: Carpentry, Joinery, Woodworking, Building and DIY
Whether you're marking timber for cutting, checking the accuracy of a joint or setting out measurements for a construction project, a 300mm Combination Square provides a practical and versatile solution for accurate everyday measuring and marking.
For best results, ensure the sliding head is securely locked before marking or measuring. Keep the rule and reference surfaces clean, and periodically check the square's accuracy, particularly after impacts or heavy use.
See our returns policy for how to return an item.
Average £0.70 across 7 retailers · save £0.40
MyDIY £0.30; average of 7 retailers £0.70; you save £0.40.
|
Cheapest
|
£0.30 |
|---|---|
| Travis Perkins | £0.40 |
| Screwfix | £0.40 |
| Huws Gray | £0.40 |
You save £0.40 on the £0.70 average across 3 retailers
Average £3.07 across 5 retailers · save £1.68
MyDIY £1.39; average of 5 retailers £3.07; you save £1.68.
|
Cheapest
|
£1.39 |
|---|---|
| Homebase | £1.49 |
| Wickes | £2.75 |
| Travis Perkins | £3.00 |
You save £1.68 on the £3.07 average across 3 retailers
Average £10.86 across 5 retailers · save £5.85
MyDIY £5.01; average of 5 retailers £10.86; you save £5.85.
|
Cheapest
|
£5.01 |
|---|---|
| Travis Perkins | £5.11 |
| Screwfix | £9.99 |
| B and Q | £10.40 |
You save £5.85 on the £10.86 average across 3 retailers
Average £13.10 across 5 retailers · save £6.20
MyDIY £6.90; average of 5 retailers £13.10; you save £6.20.
|
Cheapest
|
£6.90 |
|---|---|
| Homebase | £7.00 |
| Wickes | £12.50 |
| B and Q | £13.00 |
You save £6.20 on the £13.10 average across 3 retailers
Average £22.33 across 6 retailers · save £10.43
MyDIY £11.90; average of 6 retailers £22.33; you save £10.43.
|
Cheapest
|
£11.90 |
|---|---|
| Wickes | £12.00 |
| Homebase | £12.00 |
| Travis Perkins | £16.98 |
You save £10.43 on the £22.33 average across 3 retailers
Average £4.03 across 7 retailers · save £1.84
MyDIY £2.19; average of 7 retailers £4.03; you save £1.84.
|
Cheapest
|
£2.19 |
|---|---|
| Homebase | £2.29 |
| B and Q | £3.50 |
| Screwfix | £3.59 |
You save £1.84 on the £4.03 average across 3 retailers
Average £11.95 across 6 retailers · save £5.06
MyDIY £6.89; average of 6 retailers £11.95; you save £5.06.
|
Cheapest
|
£6.89 |
|---|---|
| Screwfix | £6.99 |
| Homebase | £8.99 |
| Wickes | £10.00 |
You save £5.06 on the £11.95 average across 3 retailers
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