MUL-T-SQUARE

The SUMNER Mul-T-Square is a precision alignment and layout tool designed for pipe fitters, welders, and fabricators. Its two 45° blades glide smoothly within a durable handle, allowing users to quickly mark and verify critical angles during pipe and fitting preparation.

Built from lightweight, durable aluminum, the Mul-T-Square handles flanges up to 8 in. (203 mm) and fittings up to 14 in. (356 mm) in diameter. Clearly marked imperial and metric scales provide easy measurement, while standard 10 in. and 14 in. arms, plus an optional 30 in. version, deliver flexibility for a wide range of fit-up and layout tasks.

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Part No. Model Description Arm Length Shipping Weight Shipping Dimensions
790000 MTS Mul-T-Square w/Standard Blades 10″ & 14″ / 254 mm & 356 mm 2.0 lbs / 0.91 kg 19 x 10 x 6″ / 483 x 254 x 152 mm
790030 MTSE Mul-T-Square w/Extended Blade 30″ / 762 mm 1.1 lbs / 0.50 kg 19 x 10 x 6″ / 483 x 254 x 152 mm

The SUMNER Mul-T-Square is a versatile, precision alignment and layout tool designed for pipe fitters, welders, and fabricators. Featuring two 45° blades that glide smoothly within a rugged plastic handle, this tool simplifies marking and verifying key angles during pipe and fitting preparation.

Constructed from lightweight, durable aluminum, the Mul-T-Square handles flanges up to 8″ / 203 mm and fittings up to 14″ / 356 mm in diameter. It offers quick reference for both 45° and 90° angles, making it essential for consistent, accurate layout. The blades are clearly marked in imperial and metric units for seamless measurement.

The tool comes standard with 10″ / 254 mm and 14″ / 356 mm arms, and an extended 30″ / 762 mm version is available for larger applications. Compact yet capable, the SUMNER Mul-T-Square boosts productivity and precision across fit-up tasks.

Product Advantages

  • Precision alignment and layout tool for pipe fit-up and fabrication

  • Two 45° sliding blades for fast, accurate angle marking

  • Quick reference for 45° and 90° angles

  • Lightweight, durable aluminum construction

  • Clearly marked imperial and metric measurements

  • Handles flanges up to 8 in. (203 mm)

  • Works with fittings up to 14 in. (356 mm) diameter

  • Standard 10 in. and 14 in. arms included

  • Optional 30 in. (762 mm) arm for larger applications

  • Improves accuracy and efficiency in pipe layout and preparation

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