Starrett 156M Metric 28-leaf screw pitch gauge
Check compatibility
Starrett 156M is the 28-leaf gauge for selected metric pitches from 0.25 to 2.50 mm. It is useful for fine metric fasteners where a gauge beginning at 0.35 mm has no matching leaf.
Questions before ordering
What does the 0.25–2.50 mm range describe?
It describes the selected metric pitch leaves, separate from fastener diameter. Check the marked leaf list and compare the 188-130 if you also need pitches above 2.50 mm.