This semicircular protractor is housed in its original wooden fitted case. The case is in very poor condition, but it was originally covered with thin leather and lined with purple velvet. The case is ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Beam compasses were used to draw ...

Read more: Can Switzerland lower agricultural tariffs to negotiate a better deal with the US? Why a slow-paced digital transition may be best for democracy Read more: Why a slow-paced digital ...