Being easily distracted, started taking apart a recently acquired little 3-bank typewriter for a proper cleaning. When scrubbing the escapement rack, noticed that it had a number stamped in it: 2,67
A quick check with the vernier confirmed that 2.67 indeed is the pitch in mm. Somehow had not expected that. For a 'normal' Pica machine assumed 10 characters per Inch as common standard.
One Inch at 25.4 mm by 2.67 mm suggest 9.51 times - with a design goal of 9 and a half characters per Inch, the pitch would be 25.4 divided by 9.5 equals about 2.673; effectively the 2.67 as marked. Very likely then that these machines were not 10 cpi, but 9½ cpi.
As extra; the mostly emptied frame of this little machine - no prizes :-)
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