Dụng cụ vẽ Iris

I've been sketching floor plans for years and always dreaded drawing perfect circles freehand—this thing nails it. The way the aperture moves smoothly to tighten the radius from 3 to 70mm is oddly satisfying, and it makes shading quick work. My straight lines finally have a matching circle to go wit

The moving aperture from 3 to 70mm makes concentric circles feel effortless—I used it for a shaded site plan and the crisp edges saved me at least an hour of fiddling with compasses. It's become a permanent fixture on my drafting desk.

The adjustable aperture glides so smoothly that switching from a 3mm dot to a 70mm circle takes seconds, and the shaded-circle option is a lifesaver for quick elevation renderings. I’ve used it on three projects this week and haven’t reached for a compass once.