Starrett 50443 Machinist Precision Level 12 in Cast Iron

Product Description

The STARRETT 50443 is a machinist-grade precision level designed for high-accuracy leveling and alignment tasks in machine shops, tool rooms, and industrial maintenance environments. Built from cast iron, this level measures 12 inches in length with a base width of 1-3/32 inches and a height of 2-3/4 inches. It features two horizontal vials with ground and graduated main vials, delivering a graduation sensitivity of 0.005 inches per 10 inches on the main vial and 0.05 inches per 10 inches on the secondary vial. The base flatness tolerance is 1/64 inch, making it suitable for precision surface and machine tool alignment work. Machinists, millwrights, and maintenance technicians rely on this tool for critical leveling applications.

The STARRETT 50443 is intended for use in precision machining and industrial maintenance settings. It is well suited for leveling machine tools such as lathes, mills, surface grinders, and similar equipment where close tolerance leveling is required. The cast iron construction provides thermal stability and resistance to wear, making it appropriate for shop floor environments. This level is a hands-on tool for machinists and millwrights performing machine installation, realignment after relocation, or routine maintenance leveling checks.

Key Features

• Main vial sensitivity of 0.005 inches per 10 inches for high-precision leveling
• Secondary vial sensitivity of 0.05 inches per 10 inches for general alignment
• Cast iron construction for thermal stability and durability in shop environments
• Ground and graduated main vials for accurate, readable bubble positioning
• Base flatness of 1/64 inch for reliable contact on precision surfaces
• Three total vials including two horizontal vials for versatile orientation checks

Compatibility

Designed as an OEM-style machinist precision level suitable for use with standard machine tool leveling and alignment applications in industrial and tool room settings.

Installation Notes

This level is typically used by machinists and millwrights and requires no permanent installation. Before use, ensure the reference surface is clean and free of chips, burrs, or coolant that could affect base contact. Handle with care to avoid dropping, as impact can shift vial calibration. Periodic calibration checks against a known reference surface are recommended to verify ongoing accuracy.