Starrett 53232 Dial Drop Indicator 0.125 in Range

Product Description

The STARRETT 53232 is a dial drop indicator designed for precision dimensional measurement in machining, inspection, and tooling applications. It covers a measurement range of 0 to 0.125 inches with a dial graduation of 0.0005 inches, giving technicians fine resolution for surface comparison, runout checks, and setup verification. The 0-25-0 balanced dial reading allows deviation checks in both directions from a zero reference. The white dial face carries a no-glare satin finish, and the crystal is unbreakable for durability in shop environments. A jeweled bearing mechanism supports consistent, repeatable readings over extended use.

This indicator is suited for use in machine shops, tool rooms, and quality-control stations where English-unit measurement is standard. The lug back mounting style allows attachment to standard indicator holders and magnetic base arms. A flat back is included for surface-plate work. The 0.375-inch stem diameter fits common indicator holders. Machinists, metrologists, and precision mechanics install this unit as part of surface plate setups, lathe runout checks, and fixture alignment routines. The revolution counter tracks cumulative travel across the 0.050-inch-per-revolution range.

Key Features

• 0 to 0.125 inches measurement range with 0.0005 inches graduation for fine-resolution readings
• 0-25-0 balanced dial reading for bidirectional deviation measurement from a zero reference
• Jeweled bearing for smooth, repeatable indicator travel
• No-glare satin finish white dial face with unbreakable crystal
• Stainless steel stem at 0.375 inches diameter and 0.719 inches stem length
• Includes flat back in addition to lug back for versatile mounting
• Revolution counter tracks cumulative spindle travel across each 0.050-inch revolution

Compatibility

Designed as an OEM-style precision dial drop indicator for use with standard lug-back indicator holders, magnetic base arms, and surface plate fixtures accepting a 0.375-inch stem diameter.

Installation Notes

Installation is performed by machinists, metrologists, and precision mechanics. Secure the indicator in a compatible holder using the lug back or flat back as required by the setup, ensuring the stem is fully seated and the holder clamp is snug before zeroing. Do not overtighten the holder clamp against the stem, as this can bind the spindle and affect accuracy. Always zero the indicator under no-load conditions and confirm the spindle moves freely through the full range before taking measurements.