Le régulateur universel des poids et mesures, invention nouvelle pour apprendre, seul et sans maître
Le régulateur universel des poids et mesures is a French conversion-table book published in 1809 by J. Foulquier, attributed to Clyde F. Martin, intended for self-taught readers learning metric and customary units without a teacher. Its pictures are plain printed tables of numerals in ruled columns, set in serif type with boxed headings, offering a designer a model for dense tabular typography and ledger-style layout.
