The FIT-UP PRO Mul-T-Square is a versatile alignment and layout tool engineered for pipefitters, welders, and fabricators who require precision and efficiency. Designed with two 45° blades that slide smoothly within a robust plastic handle, it simplifies marking and verifying critical angles. Constructed from lightweight, durable aluminum, it handles flanges up to 8″ / 203 mm and fittings up to 14″ / 356 mm in diameter. The tool includes standard 10″ / 254 mm and 14″ / 356 mm blades, with an optional 30″ / 762 mm extended blade set available for larger applications. Imperial and metric scale markings ensure accurate measurement and compatibility across global job sites. Compact and portable, the Mul-T-Square allows for quick, repeatable layout in tight spaces or complex configurations. Whether verifying 45° or 90° angles or marking cuts on fittings and pipes, it delivers the reliability and precision essential for consistent, high-quality fabrication work.
MUL-T SQUARE
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| Part No. | Model | Description | Arm Length | Shipping Weight |
| 790000 | MTS | Mul-T-Square* w/Standard Blades | 10″ & 14″ / 254 mm & 356 mm | 2.0 lbs / 0.91 kg |
| 790030 | MTSE | Mul-T-Square* w/Extended Blade | 30″ / 762 mm | 1.1 lbs / 0.50 kg |
| 790021 | MTSBLADE | Mul-T-Square* Blades only (2) | 10″ & 14″ / 254 mm & 356 mm | TBC |
| 790026 | MTSEXTBLADE | Mul-T-Square* Extended Blades only (2) | 30″ / 762 mm | TBC |
| 790001 | 790001 | Mul-T-Square* Handle Only | n/a | TBC |
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.
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