Starrett 3657U Flex-O-Post with Locking Lever and Snug for Dial Indicators

The Starrett 3657U Flex-O-Post with Locking Lever and Snug is a precision indicator holder post designed for accurate and repeatable measurement setups. Part of Starrett's trusted Series 657 Magnetic Bases and Holders line, this post assembly provides a flexible, adjustable arm solution for positioning dial and electronic indicators with confidence.

The integrated locking lever allows for quick, secure positioning adjustments, while the included snug — featuring a 3/8" diameter hole — provides a firm, stable mount for your indicator. With a generous reach, this post accommodates a wide range of measurement setups on machine tools, surface plates, and inspection fixtures.

Key Features:

• Flex-O-Post design allows precise indicator positioning
• Includes locking lever for quick, secure arm adjustment
• Snug with 3/8" diameter hole for reliable indicator attachment
• 15-inch vertical reach and 10-inch horizontal reach
• Compatible with Starrett Test, Back Plunger, AGD, Dial, and Miniature Dial Indicators
• Part of the Starrett Series 657 Magnetic Bases and Holders system
• Sold individually (post assembly only — magnetic base sold separately)

The Starrett 3657U is the ideal replacement or add-on post for machinists, quality control technicians, and toolroom professionals who demand precise indicator positioning. EDP No. 12695.