Artist Gabriele Salazar placed a miniature level between two sets of small, wood shims, which she then with a rubber band fastened together at the bottom. The shims lean outward because the level pushes them apart, and Salazar calls her precarious contraption Even Pressure. It stands alone on a pedestal in “Building Material,” a subtle show of art about structure and lack thereof, curated by artist Lucas Blalock at Control Room. 2006 E. 7th St., dwntwn.; through Nov. 18.

Sundays. Starts: Oct. 28. Continues through Nov. 18, 2012

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