Back A Treatise on the Astrolabe Esperanto Tratado del astrolabio Spanish Trattato sull'astrolabio Italian
A Treatise on the Astrolabe is a medieval instruction manual on the astrolabe by Geoffrey Chaucer. It was completed in 1391. It describes both the form and the proper use of the instrument, and stands out as a prose technical work from a writer better known for poetry, written in English rather than the more typical Latin.