Design for a rood loft and an organ

Design: rood loft with four fluted Doric columns; there is a gallery with medallions, with St. Cecilia on the left and King David on the right, and a choir organ and a large organ, on which, both in the centre (above an angel) and at the sides, there are musical instruments linked as trophies. At the bottom, there is a plan with a scale indication below it, in Antwerp measurements on the left and French measurements on the right.