1658 J. Collins (title) The sector on a quadrant, or, A treatise containing the description and use of three several quadrants... Also an appendix touching reflected dyalling, from a glass however posited.
1710 J. Harris II Reflected Dialling is the Art of describing..all the Furniture of Dials on such Places as the Suns direct Rays can never come to directly, but only by the help of some reflecting Surface.