Grade A Granite Surface Plate 400 X 250 X 60 mm For Precision Inspection And Layout, Ultra Stable Drift Free, Non Magnetic, Non Conductive, Corrosion Resistant, Dasqua Quality Metrology Tool For Pro Shops, Labs, And Hobby Machinists

Granite Surface Plate 400x250x60 mm, Grade A, single unit
✔️ Flatness around ±0.0001 in, DIN876, non-magnetic, corrosion-proof

This Grade A granite surface plate is designed for precision inspection and layout tasks in pro shops, labs, and hobby setups. It provides a stable, drift-free reference surface for measuring flatness, squareness, and tool setup.

✅ Grade A (Grade 0) granite surface plate with ±0.0001 inch tolerance
✅ 400 x 250 x 60 mm size (15.75 x 9.84 x 2.36 in)
✅ Non-magnetic, non-conductive, corrosion-proof granite construction
✅ Meets DIN876 & GGG-P-463C; inspection certificate included (not NIST)
✅ Temperature-stable with minimal dimensional changes under temperature swings
✅ Not NIST traceable; ideal for precision inspection, layout, and tool setup

💡 What is a granite surface plate used for in precision work?

- Handy reference for flatness checks, squareness, and height setting
- Useful for laying out parts and calibrating instruments in shops
- Durable, corrosion-proof, non-magnetic base for long-term use