Starrett 50334 Inside Caliper Spring Joint 4 Inch

Product Description

The STARRETT 50334 is a spring-joint inside caliper designed for taking precise inside measurements in metal fabrication, machining, and inspection work. The caliper features a 4-inch flat leg length and a maximum measurement capacity of 4 inches (100 millimeters). The spring joint maintains consistent tension during use, while screw adjustment allows the technician to dial in exact settings without backlash. Constructed from polished steel with a solid nut, this caliper is built for durability in shop environments. Machinists, toolmakers, and metrology technicians are the primary users.

The STARRETT 50334 is suited for inside measurement tasks including bore gauging, slot width verification, and similar interior dimension checks in machine shops, tool rooms, and manufacturing facilities. It is designed for use with the Starrett 73 accessory. The flat leg profile makes it well-suited for measuring parallel interior surfaces. This caliper serves both individual technicians and production environments where reliable manual measurement tools are required.

Key Features

• Spring joint maintains tension and returns to set position during repeated use
• Screw adjustment method allows fine, controlled measurement setting
• Flat leg design suited for inside measurement of parallel surfaces
• Polished steel construction resists wear and corrosion in shop conditions
• Solid nut provides stable, repeatable locking without slippage
• Compatible with Starrett 73 for expanded measurement applications

Compatibility

Designed for use with the Starrett 73. Suitable as an OEM-style inside caliper for machining and metrology applications requiring manual inside measurement up to 4 inches.

Installation Notes

Inside calipers of this type are hand tools requiring no installation. Set the caliper to the approximate measurement before placing it in the bore or slot, then adjust with the screw for a light drag fit. Handle the polished steel legs with care to avoid nicks that can affect measurement accuracy. No power source, fasteners, or code compliance is required for use.