Flag of New Zealand — construction sheet
Own work Geometry and dimensions from New Zeland Identity &amp; Heritage.

The centres of the stars forming the long limb of the cross shall be on a vertical line on the fly, midway between the Union Jack and the outer edge of the fly, and equidistant from its upper and lower edges; and the distance apart of the centres of the stars shall be equal to thirty-six sixtieths the hoist of the ensign.
The centres of the stars forming the short limb of the cross shall be on a line intersecting the vertical limb at an angle of 82 therewith, and rising from near the lower fly corner of the Union Jack towards the upper fly corner of the ensign, its point of intersection with the vertical line being distant from the centre of the uppermost star of the cross twelve-sixtieths of the hoist of the ensign.
The distance of the centre of the star nearest the outer edge of the fly from the point of intersection shall be equal to twelve-sixtieths of the hoist of the ensign, and the distance of the centre of the star nearest the Union Jack from the point of intersection shall be equal to fourteen-sixtieths of the hoist of the ensign.

The star nearest the fly edge of the ensign shall measure five-sixtieths, the star at the top of the cross and that nearest to the Union Jack shall each measure six-sixtieths, and the star at the bottom of the cross shall measure seven-sixtieths of the hoist of the ensign across their respective red points, and the width of the white borders to the several stars shall in all cases be equal to one one-hundred-and-twentieth of the hoist of the ensign.— text from New Zealand Gazette on June 27, 1902 as quoted on the Identity and Heritage website.


This construction sheet shows imaginary circles around the fimbriations on the four stars; these circles and their diameters do not appear in the source material.  The diameters of the imaginary circles have been derived using trigonometry.
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