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Accurately establish and transfer directly to your drawings those elusive critical angles and proportions in any composition.

Simply move the sighting strip to correspond with any angle then lay the frame on your drawing, lining up the inner edge of the frame with the vertical line of your drawing and draw in the observed angle - it's as simple as that!

Size of frame: 5.25" x 6.5" (13 x 16.5cm)

Strip length: 11.5" (29cm)

Look through the frame and line up an inner vertical edge with any vertical in your subject e.g. the vertical edge of a building. Move the strip to correspond with any angle e.g. a sloping roof. Lay the frame on you drawing line up the inner edge of the frame with the vertical line and draw the observed angle. Continue until you have established as many angles and points of the reference as you need.