Starrett 53287 Dial Drop Indicator 0-1 in 0.001 Grad

Product Description

The STARRETT 53287 is a dial drop indicator with a measurement range of 0 to 1 inch and a 0.001 inch graduation, making it suitable for precision surface, runout, and concentricity checks in machine shops, maintenance facilities, and fabrication environments. The 2.25 inch diameter white dial features a 0-50-0 bidirectional reading scale and a no-glare satin finish for clear readability under shop lighting. A built-in revolution counter tracks full spindle cycles, and the stainless steel stem measures 0.375 inch in diameter. The unbreakable crystal and rugged construction hold up to repeated handling on the shop floor. Licensed machinists, millwrights, and precision mechanics are the primary users.

The 53287 is applied wherever controlled linear displacement measurement is needed: part inspection, fixture alignment, press work, and machine tool setup. The lug back mounts to standard indicator holders and magnetic bases. A flat back is included for surface plate or direct-mount applications. The 0.1 inch per revolution spindle travel suits general-purpose inspection tasks that require moderate sensitivity without sacrificing range. It is used in both production and maintenance settings across manufacturing, tooling, and industrial service trades.

Key Features

• 0 to 1 inch total range with 0.001 inch graduation for reliable shop-floor precision
• 0-50-0 bidirectional dial reading with 2.25 inch white dial and no-glare satin finish
• Revolution counter tracks full spindle cycles during measurement
• Jeweled bearing for smooth, consistent spindle action and long service life
• Stainless steel stem (0.375 inch diameter) resists corrosion and wear
• Unbreakable crystal protects dial face in demanding shop environments
• Lug back included; flat back also included for versatile mounting options

Compatibility

Designed as an OEM-style drop indicator compatible with standard lug-back indicator holders, magnetic base arms, and surface plate setups requiring a 0.375 inch stem diameter.

Installation Notes

Mount the indicator in a secure holder or magnetic base before zeroing the spindle against the reference surface. Verify the stem is perpendicular to the measured surface to avoid cosine error and inaccurate readings. Do not overtighten the lug clamp, as excessive clamping force can distort the case and affect calibration. Periodic cleaning of the stem and bezel contact points helps maintain consistent operation.