As no suitable instrument was available in Berlin, Lemonnier lent him his own quadrant which was reported to be the best such instrument in France.
Bilang hindi nababagay na instrumento ay makukuha sa Berlin, Lemonnier Mahal na Araw sa kanya ng kanyang sariling kuwadrante na kung saan ay iniulat na ang pinakamahusay na tulad ng instrumento sa France.