Type Casting Small 248×320 Medium 497×640 Large 795×1024 Download Tiff Original 1863×2400 | (1.1 MB) Description A technique for casting the individual letters known as sorts used in hot metal typesetting by pouring molten metal into bronze moulds called matrices. Keywords cast, casting, copy, transcript, written account, written record Galleries Printing and Paper Industries Source: Government Printing Office Official Gazette (Washingon, DC: Government Printing Office, 1912)