Monotype moulds were made to very tight tolerances (less than 0.000025″ – a quarter of a tenth of a thousandth of an inch), and each was individually numbered. The following is a list of the mould style and the series number groups.
Composition – Constant Height | 100000 |
Composition – American Constant Height | 200000 |
Composition – High Speed | 300000 |
Large Composition – 14/24pt or D | S |
Split fraction – 4/6pt | |
Quad and Space | |
Duplex High Quad | S |
Duplex Low Quad | S |
Triplex | S |
Multigraph | |
Palace Script | 72000 |
Lead and Rule – 1½/3pt | 90000 |
Lead and Rule – 6/12pt | 90000 |
Lead and Rule – 1/3pt | 77000 |
Lead and Rule – 4/18pt | 76300 |
Display – 14/36pt | S |
Display – 14/36pt | 72000 |
Display 42/72pt | 74000 |
Furniture – 24/72pt | 78000 |