The Pincushion EffectAmerican land surveying has a dilemma; its called the pincushion corner. This is a name used to describe the phenomena of multiple boundary monuments being set by land surveyors when only one boundary corner exists under the law. The pincushion has not gone unnoticed by the legal profession and the general public. It is now common knowledge that no two surveyors can agree on the location of any given property corner. The pincushion is physical proof