The morning air seeped beneath the shed door, carrying dust across the pine boards. Stepping out from the tin, I found a brass wing nut resting crooked against a steel drafting compass. A loose joint compromises precision. I braced my boots against the scarred timber, set both hands against the flat wing of the nut, and applied measured leverage. It yielded with a dry metallic squeak, rotating three deliberate turns until the needle point locked firm and square against the wood seam. Calibration restored. A sound perimeter begins with dependable tools.