Shopping.co.uk

Rolson Combination Square - 300mm - 50858

Rolson Combination Square - 300mm - 50858

The Rolson 300mm Combination Square is a precision tool designed for use in both timber and metal ...

Best current price£6.49from eBay

Best offers

Shopping.co.uk recommended and popular offers

All Offers

6 offers from £6.49 - £9.23

View price history by clicking the chart icon.

eBayRolson 300mm (12inch) Combination Square Adjustment Level 50858
Free delivery in 1–3 days
£6.49
Visit shop
OnBuy.com12inch 300mm Combination Square Carpenters Adjustable Measure Measuring Set New
£3.50 delivery
£9.23
Visit shop
Rapid Online - Rapid Electronics Ltd.Rolson 50858 300mm Combination Square
Free delivery in 1–3 days
£9.23
Visit shop

Product Information

Full details

The Rolson 300mm Combination Square (50858) is a versatile precision tool essential for carpenters, metalworkers, and DIY enthusiasts who require accurate marking and measuring. It offers the key benefit of combining multiple measuring instruments into one durable unit, including a bubble level and a scribe; however, users should note that as a budget-friendly tool, it may require initial calibration checks against a known square to ensure maximum precision for fine cabinetry work.

All features

Model Part Number50858
BrandRolson

Extended Product Information

FAQs

Does the ruler have markings on both sides?

Yes, the stainless steel ruler features clear, engraved metric and imperial markings for versatility.

Can the square head be completely removed from the ruler?

Yes, by unscrewing the brass knurled knob completely, you can slide the head off to use the ruler independently.

What is the maximum length of the ruler?

The ruler is 300mm (approximately 12 inches) in length.

Is the bubble level accurate for construction work?

The integrated bubble level is suitable for general checking and leveling tasks, though it should not be used as a replacement for a precision spirit level.

How do I use the built-in scribe?

The scribe is typically held within the head assembly; you can pull it out to mark lines and push it back in for storage.

Troubleshooting

The ruler does not slide smoothly

Clean the blade and the inner groove of the head with a dry cloth to remove metal shavings or sawdust; lightly lubricate with machine oil if needed.

The square is not accurate at 90 degrees

Loosen the brass knob and ensure there is no debris between the ruler and the head. If the error persists, the square head may have been dropped and may require replacement.

Knurled knob is difficult to turn

Check the thread of the brass knob for debris; ensure the metal is not cross-threaded during tightening.

Pros and Cons

Pros

  • Dual-unit markings for versatility in both metric and imperial projects
  • Sturdy stainless steel blade resists bending and corrosion
  • Integrated bubble level adds significant value for general leveling tasks
  • Removable scribe keeps markings tidy and avoids the need for a separate pencil or awl
  • Adjustable brass knob allows for easy, tactile operation even when wearing gloves

Cons

  • Requires periodic verification to ensure the square head remains perfectly aligned at 90 degrees
  • Budget-grade manufacturing may not meet the tolerances required for high-end fine furniture making
  • The bubble level vial is non-adjustable if it falls out of calibration

Setup, Compatibility & Care

To maintain accuracy, keep the square away from high-impact drops that could bend the steel blade or displace the bubble level vial. Before starting a critical project, verify the square's 90-degree setting by drawing a line against the square, flipping it over, and ensuring the new line perfectly overlaps the first. If the ruler becomes stiff when sliding, a light application of silicone spray or machine oil on the internal track of the head will restore smooth movement. Always store the tool in a dry environment to keep the stainless steel in peak condition and prevent the knurled knob from oxidizing.

Price History

DatePrice
Visit shop