Maun · SKU 1701-048

Maun Steel Straight Edge Imperial 48″ (1701-048)

Four feet of coverage for bigger sheets and hides.

The Maun Steel Straight Edge Imperial 48″ (1701-048) is a 1219 mm carbon-steel straight edge with a precision-ground bevelled working edge, accurate to 0.001 inch per foot (0.084 mm per metre). UK-made, it’s a four-foot guide for marking across 8 × 4 ft sheets, large panels and broad hides.

£95.00inc. VAT · £79.17 ex VATIn stock

Length

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48″ length covers four-foot sheets, panels and hides in one pass.
Accurate to 0.001 inch per foot (0.084 mm per metre): within 0.004 in (0.1 mm) over the full 48″.
Bevelled working edge gives a clear line of sight across four-foot sheets and broad hides.
Robust 3.25 mm carbon-steel body: reassuringly heavy across a full four feet.

Best suited to

Across 8 × 4 ft sheets
Large panels
Broad hides

UK-madeMade by Maun

12 months’ warrantyOr 2 years when you register it

Stated accuracy0.084 mm per metre

Product description

The 48″ model is made for full-width sheet and leatherwork. Run one straight line right across the job, instead of adding another alignment point with a shorter edge.

Why the Maun Steel Straight Edge Imperial 48″ (1701-048) works

Accurate work. Less rework.

0.004 in (0.1 mm)over the full 48″

Across four feet, the bevelled working edge stays within 0.004 inch (0.1 mm) of true.
That matches a common sheet width, so you can mark a full-width line to a known tolerance in one pass.

See the line clearly.

48″of bevelled working edge

The bevel keeps four feet of line in clear view.
Run your scriber or knife across the full sheet or hide and stay on the line all the way.

Built for repeated use.

3.25 mmcarbon-steel body

The robust 3.25 mm body gives four feet of reassuring weight: enough to keep the tool steady on large sheet and broad hides while you work.

Best suited to

Manufacturing & Engineering

Choose the Maun Steel Straight Edge Imperial 48″ (1701-048) for four-foot sheets, large fabricated panels, frames and long gasket cuts.

It matches a common sheet width, so you can mark, scribe or cut in one pass.
The rigid carbon-steel body and precision bevel give you a stable, visible reference for component layout and practical checks for bow or misalignment.

Leatherwork

The Maun Steel Straight Edge Imperial 48″ (1701-048) suits broad hides, full-length straps and large panels or gussets.

One continuous guide gives a straighter result than joined passes.
Its weight keeps the hide in place, and the hard-wearing steel edge takes repeated blade contact while keeping the cut line in clear view.

Specifications

SKU	1701-048
Length	48″ (1219 mm)
Body	surface-ground carbon steel, 53 mm wide and 3.25 mm thick
Working edge	precision-ground and bevelled
Accuracy	0.001 inch per foot (0.084 mm per metre)
Straightness over its length	within 0.004 in (0.1 mm) over the full 48″
Storage	6 mm hanging hole; supplied in a wallet with anti-rust paper
Made	UK-made, under our ISO 9001 quality system
Warranty	Standard 12 months’ warranty. Register your tool to extend this to 2 years.
Alternatives	36″ for yard-wide work; 54″ for extra reach.

The working edge

The bevel runs along the whole of one long edge. You run your scriber or knife against it, so you can see the line as you go.

Frequently Asked Questions

What is a 48-inch steel straight edge used for?

A 48-inch (1219 mm) steel straight edge is made for four-foot work: marking and scribing across the width of standard 8 × 4 ft sheets, large fabricated panels and frames, long gasket cuts, and broad hides and full-length straps in leatherwork.

Will a 48″ straight edge cover the width of an 8 × 4 sheet?

Yes. An 8 × 4 ft sheet is 48 inches wide, so the Maun 48″ matches its full width and you can mark or scribe across it in one pass. If you want a little overhang at each end, choose the 54″.

Should I choose the 48″ steel or the 1250 mm aluminium safety straight edge?

Both cover a four-foot width. Choose the 48″ steel for scribing metal, gasket work and heavy leather cutting, where reassuring weight and a hard-wearing bevelled edge count. Choose the 1250 mm aluminium safety straight edge for knife work near your steadying hand, where the recessed finger profile, non-slip backing and lighter weight matter more.

Last updated 11 November 2026

Content reviewed by Rebekah Jackson, Digital Marketing Executive at Maun Industries Limited, formerly on Maun’s production team, on 21 October 2026. We last checked prices and stock against maunindustries.com on 11 November 2026.

Size check: is 48″ long enough?

It’s long enough for the width of an 8 × 4 ft board (1220 mm) in one pass.
It’s too short for the length of an 8 × 4 ft board (2440 mm). For that, choose the Maun Aluminium Safety Straight Edge 3000 mm (1710-300).
One size down is the Maun Steel Straight Edge Metric 1000 mm (1700-001).
One size up is the Maun Steel Straight Edge Metric 1250 mm (1700-125).

Steel or aluminium: which suits your job?

This straight edge