ocr: To pinpoint a place to 100 metres within the 1 kilometre grid square, we can mentally subdivide each side of the square into 10. This will give a 59 six-figure grid reference. The church in the diagram D 8 opposite can be identified as SK 743586. The grid reference is constructed as follows: 6 SK= the reference for the 100 kilometre square in which the church falls. t 74= the Eastings grid line number 3 2 58= the Northings grid line number *f 4 1 The remaining figures in the reference (743586) 58 12 3456789 identify the imaginary lines which pinpoint the feature 74 75 within that square.