Starrett 234A-5 End Measuring Rod 5" with Insulated Rubber Handle

The Starrett 234A-5 is a 5-inch end measuring rod (micrometer standard) designed for checking and setting micrometers of 2" capacity and larger. Also commonly referred to as a micrometer standard or setting rod, it is an essential reference tool for machinists and metrologists working with precision measuring instruments.

Constructed from special tool steel in rod form, both ends are hardened and accurately lapped to a spherical radius for repeatable, precise contact. The 234A-5 is well-suited for use on machine tools for comparing gages, checking precision measuring tools, measuring parallel surfaces, and a wide variety of other precision measurement tasks.

Key Features:

• 5" (5.0000") nominal length — ideal for setting micrometers up to 5" capacity
• 1/4" rod diameter with spherical, hardened, lapped ends
• Insulating rubber handle minimizes thermal expansion caused by hand heat
• Comfortable grip for extended use
• Made of special tool steel for durability and long-term accuracy
• Compatible with all Starrett and most other brand micrometers furnished with standards

The 234A series standards are the same type supplied by Starrett with their micrometer sets. Available in a full range of lengths to cover any micrometer capacity requirement.