Trafalgar Square draw up plans for clearing a large area south of Kent's stable block, and as far east as St Martin's Lane. His plans left open the whole area of what became Trafalgar Square, except for a block in the centre, which he reserved for a new building for the Royal Academy. The plans included the demolition and redevelopment of buildings between St Martin's Lane and the Strand and the construction of a road (now called Duncannon Street) across the churchyard of St Martin-in-the-Fields. The Charing Cross Act was passed in 1826 and clearance started soon after. Nash died soon after
Set square Set square A set square or triangle (American English) is an object used in engineering and technical drawing, with the aim of providing a straightedge at a right angle or other particular planar angle to a baseline. The simplest form of set square is a triangular piece of transparent plastic (or formerly of polished wood) with the centre removed. More commonly the set square bears the markings of a ruler and a half circle protractor. The outer edges are typically bevelled. These set squares come in two usual forms, both right triangles: one with 90-45-45 degree angles, the other with