Precision Straight Edge – 400 mm – DIN 874

The ultimate reference for extreme flatness and inspection.

This professional 400 mm knife-edge straight edge is an essential measuring tool for every toolmaker, engine reconditioning expert, and quality inspector. Manufactured according to the strict DIN 874 standard, this straight edge features a razor-sharp measuring edge that makes even the smallest deviations in flatness immediately visible using the light-gap method.

Key Features:

• Unmatched Accuracy: Produced according to DIN 874, guaranteeing extremely tight tolerances. Ideal for inspecting machine beds, cylinder heads, and precision parts.

• Hardened and Ground: Manufactured from special tool steel, fully hardened, and precision ground and lapped for a perfectly straight measuring edge.

• Thermally Insulated Grip: Equipped with a heat-insulating handle to prevent body heat from expanding the steel, which could otherwise affect measurement accuracy.

• Knife-Edge Profile: The sharp, tapered edge allows you to observe deviations of just a few micrometers when light passes underneath.

• Durability: Corrosion-resistant and supplied in a protective case to keep the delicate measuring edge in top condition.