► Starrett | Bore Rods

Accurate Internal Measurement for Work That Demands Tight Tolerances

Internal dimensions don’t forgive mistakes, which is why bore measurement has to be spot on. Starrett Bore Rods give machinists, fitters & inspectors the accuracy needed for deep bores, long cavities & internal runs where other tools can’t reach cleanly. When the job depends on consistent spacing, controlled depth or precise inside diameter checks, these rods bring stability to the measurement you rely on.

Most machinists have dealt with tools that flex, stick or drift when extended into deep bores. Starrett avoids those problems with rods that keep straightness, maintain feel & transfer measurement cleanly back to the gauge or micrometer. When you’re inside a bore that already fights back with heat, expansion or tight walls, you want a rod that won’t add its own problems.

Shops that already use Cylindrical Roller Bearings, Machine Screws, or Punch & Chisel Sets will appreciate how these rods support tight mechanical fits. They help confirm bore size before assembly, check wear during rebuilds & support QC inspections where accuracy is the only acceptable outcome.

Workbenches that stay organized often store these rods inside Foam Tool Inserts, place them near Lockable Security Chests, or keep them alongside Hydraulic Equipment to avoid damage. Clean storage prevents tiny dents or marks that could throw readings off.

What’s in This Collection:

► Starrett Bore Measuring Rods
‣ Suited for checking internal diameters, long-depth measurement & precision bore work.

► Starrett Extension Rod Sets
‣ Designed to increase reach while maintaining straightness & consistent measuring feel.

► Starrett Replacement Bore Rods
‣ Used as swap-in components for worn or damaged rods needing restoration of accuracy.

► Starrett Rod Accessories
‣ Helpful for securing rods to micrometers, indicators or multi-part bore gauges.