Pro Grade Ultra Precision Linear Motion Parallel Blocks Set 1 2 3 Inch 25 50 75mm with 23 Holes Iron Gauge Block Tool Kit for CNC Milling and Metalworking Metrology

1-2-3 in / 25-50-75 mm Parallel Blocks for CNC Metrology
✔️ 2 hardened stainless blocks, 23 holes, 0.0001' squareness

These ultra-precision gauge blocks provide accurate reference for flatness and squareness in CNC milling and metalworking setups. They are commonly used in metrology labs and on machine benches to verify alignment and measurement baselines.

✅ Material: Hardened Stainless Steel
✅ Squareness: 0.0001'
✅ Parallelism: +/- 0.0001'
✅ Height accuracy in pair: +/- 0.0001'
✅ Dimensions: 25-50-75mm
✅ Package includes: 2 parallel blocks, 5 socket head cap screws, 1 hex key

💡 What is a gauge block set used for in precision machining setups?

Handy for quick alignment and reference checks in metalworking.

- handy for quick alignment checks in CNC milling
- supports precise spacing and squareness in fixtures
- commonly used with metric 25-50-75mm and inch 1-2-3 sets
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