Starrett 50047 Combination Square Set 4 Piece

Product Description

The STARRETT 50047 is a 4-piece combination square set built for layout, measurement, and inspection work in the trades. The set includes a hardened steel blade measuring 11-3/4 inches in length, a cast iron square head, a cast iron center head, and a protractor head. Graduations are marked in both English and metric scales at 1/32 and 1/64 inch increments, making this set suitable for precise work across a wide range of measurement tasks. It is a standard layout tool used by electricians, pipefitters, HVAC fabricators, and millwrights who require consistent, repeatable measurements on the job or in the shop.

This combination square set is used in residential and commercial trade applications where accurate layout and angle measurement are required. The interchangeable head system allows a single blade to serve multiple functions: 90-degree and 45-degree squaring with the square head, center-finding on round stock with the center head, and angle measurement with the protractor head. It is well suited for sheet metal layout, conduit work, pipe fitting, and general fabrication tasks where a reliable, multi-function measuring tool is needed on the bench or in the field.

Key Features

• 4-piece set includes square head, center head, protractor head, and hardened steel blade
• Blade length of 11-3/4 inches with English and metric graduation markings
• Graduations at 1/32 and 1/64 inch increments for fine-resolution layout work
• Hardened steel blade resists wear during repeated use in shop and field environments
• Cast iron heads provide stable, durable seating against the blade
• Interchangeable head design allows one blade to serve squaring, centering, and angle functions

Compatibility

Designed as a standard 11-3/4 inch combination square set compatible with general layout and measurement tasks across trade disciplines. Consult STARRETT documentation to verify compatibility with other STARRETT combination square blade accessories.

Installation Notes

This is a hand tool requiring no installation. Ensure the locking mechanism on each head is fully tightened before taking a measurement to prevent blade slippage. Clean the blade and head seating surfaces before use to ensure accurate contact. Store in a dry location to prevent surface corrosion on the hardened steel blade.