Starrett H33-4 Square Head for Combination Square Blade - 4

The Starrett H33-4 is a replacement or standalone square head designed for use with 4-inch combination square blades. Starrett's combination square heads are precision-machined and built to exacting tolerances, making them a trusted choice for machinists, toolmakers, and craftspeople who demand accuracy in layout, measurement, and inspection work.

Key Features:

• Designed specifically for use with 4" combination square blades
• Precision-machined cast iron construction for durability and stability
• Features a 45° and 90° reference surface for versatile squaring and miter layout
• Includes a hardened and ground clamping groove to securely lock the blade at any position
• Spirit level vial integrated into the head for convenient leveling tasks
• Scriber storage slot included for layout work convenience
• Compatible with standard Starrett 4" blades in the H33 series

The Starrett H33-4 Square Head is sold as a head-only component, making it an ideal replacement part or a way to build a custom combination square set. Starrett has been manufacturing precision measuring tools in the USA since 1880, and this square head reflects the same commitment to quality found across their entire product line.