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Alternative form of Balthazar examples
plural Belshazzars
(dated) An early kind of overhead projector. quotations examples
A projector of such unusual design as the Belshazzar is a type unto itself. Whilst it projects transparencies […]
1950, Film User Year Book, page 39
Some 20 years ago , Aldis introduced the Belshazzar, but it was before its time […]
1969, Derick Unwin, Media and Methods: Instructional Technology in Higher Education, page 36
A certain British projecting device, called a Belshazzar, is used in teaching and lecturing to cast on a screen or wall whatever is depicted on its transparent table.
1970, A. R. Meetham, Information Retrieval: The Essential Technology, page 81