if you need four matching geese, or multiples of four, and if you get accurate results then i'd say stick with that method since it works well for you.
when you are working with scraps, or need fewer than four matching geese, i highly recommend either the EZ Angle and Companion already mentioned, or the specialty ruler from Creative Grids. there is no waste with either of those tools.
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- necessity is the mother of invention. lazy is the crazy aunt.
