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Inspection square boxes

Inspection square boxes

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

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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

specification (mm) Flatness of working surface Perpendicularity, parallelism of working surface
and parallelism between V-slot with bottom and side 
Precision grade (um)
1 2 3 1 2 3
100*100*100 3.5 7 15 7 15 30
150*150*150 4 9 17 8 18 35
200*200*200 4.5 10 20 9 20 40
250*250*250 5 11 22 10 22 45
300*300*300 5.5 12 25 11 25 50
350*350*350 6 13 27 12 27 55
400*400*400 6.5 15 30 13 30 60
500*500*500 8 17 35 15 35 70

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