Description
Cast Iron Inspection Square Box is mainly used for the testing and marking of the parallel and vertical degree of each part. Square box is a kind of cavity cube with 6 working surface which are made of cast iron or steel, one of the working face has a v-slot. Inspection Square Box is served as a versatile too for layout machine setups, tooling, inspection, measurement, scribing, equipment installation, construction of industrial engineering.

Specifications

(mm)	Parallelism Precision Grade (μm)				Parallellism and Perpendicularity
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			12	25		25	50
400*400*400			15	30		30	60
500*500*500				35