Christian Mayer

“ The Serene Elector, although he was not well the day before, yet from his great love for astronomy was not only present himself, which other kings and princes usually are; but being of an excellent and ready genius, he instituted several observations with the astronomical quadrant two hours before the egress, having marked the appulses of the four limbs of the Sun and Venus at each immovable wire, in order to find out the difference of the right ascension and declinations ”

“ Dollond’s tellescope was placed, and in the other the clock; having so easy a communication with one another, that a glance of the eye commanded them all.
The astronomical quadrant, which was a 1/2 feet radius Paris measure, was made in the year 1758, at Paris by M. Carinivet mechanical operator to the Royal Academy, and has an English micrometer; having a moveable wheel, and divided into minutes ”