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Aluminium alloy 45/90 degree angle ruler, 150 mm measuring range, triangular shape, silver finish

Ruth's sister

Ruth's sister 45/90 Degree Angle Ruler 150mm

SKU CH-F3N3-43BZ3

Aluminium-alloy 45/90° angle ruler measures up to 150 mm with 1 mm accuracy for woodworking layout

  • Durable aluminum alloy resists wear and oxidation
  • Measures 45 and 90 degree angles without flipping
  • Clear scales give 1mm accuracy over 150mm
  • Fine polished surface feels comfortable in hand
  • Compact 17cm x 7.4cm x 6.5cm size fits toolboxes

Multifunctional Angle Ruler 150mm

The Ruth's sister angle ruler is a triangular measuring tool made from aluminium alloy with clear scales for 45 and 90 degree marking. It offers a 150mm measuring range and 1mm accuracy for woodworking and layout tasks. The ruler slides to mark left and right 45 degree angles without flipping the body. A polished finish provides a comfortable grip during use.

Woodworkers and DIY layout

This ruler suits woodworkers, hobbyists and anyone marking repeated 45 or 90 degree lines on stock up to 150mm. It is not for buyers who need adjustable bevel angles, digital readouts or longer measuring reaches beyond the fixed 150mm scale. The fixed triangular shape also limits use inside tight internal corners where a sliding bevel would fit.

Simple slide-to-mark operation

No assembly is required; the tool is ready to use straight from the package. The main error users make is applying excess force when sliding, which can shift the workpiece and reduce marking precision. Keeping the fence firmly against the edge and using light pressure gives the most repeatable results. The aluminium construction resists wear but can scratch if dragged across abrasive surfaces.

How it compares

Measured against everything we stock in Worldwide Power Cords, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 60% of the 1,208 comparable items (median $9.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What surface must the 150 mm aluminium ruler rest against to register a true 45 or 90 degree angle?

The ruler slides along any straight workpiece edge or fence; the built‑in gauge stops at 45° and 90° without flipping the tool.

Can the 17 cm triangular gauge sit on a worn benchtop and still read within its 1 mm tolerance?

Yes, the fine‑polished aluminium face and fixed 45/90° stops give repeatable readings even if the bench has minor scratches.

How do I confirm the angle ruler is square after unpacking?

Place it against a known square corner; the 90° leg should sit flush on both faces and the 45° leg should bisect the corner exactly.

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