Inspection square boxes

Usage: Inspection square boxes are usually suitable for the inspection and marking of machinery parts' parallelism and verticality. They are usually cubes or cuboids with same side-length.

Material: HT200-300
Standard: JB/T3411.56-99
Specification: 100x100x100-500x500x500mm or customize
Surface: flat, V-slots, T-slots or tapped holes
Hardness of the working surface: HB160-240
Surface treatment: hand-scraped or ground finish
Foundry process: sand casting or centrifugal castings
Molding type: resin sand molding
Painting: primer and face painting

Surface coating: pickling oil and plastic-lined or covered with anticorrosion paint
Working temperature: (20±5)°C
Precision grade: 1-3 

Packaging: wooden box