actual vs ratio sizes

[Robert Monaghan <rmonagha@xxxxxxxxxxxxxxxx>]

I would like to extend my actual vs ratio size table on my medium format FAQ
pages at http://www.smu.edu/~rmonagha/mf/mffaq.html, but before I do so, 
I wanted to confirm that 6x12cm is really 2:1 based on 55mm (56?) x 110mm 
or thereabouts, and 6x17cm is really 2.83:1 or 55mm x 156mm etc. Since 
the "6cm" is really 55mm or 56mm long, then the longer axis has to be 
less to keep the (printing) ratio. But I want to verify this assumption!

Are the formats of the Fuji 6x17cm the same as the Linhof 6x17 etc.? 6x12?

Thanks! it is a bit counter intuitive that 6x12 is really 11 cm long, or 
that 6x17cm is really 15 1/2 cm long etc.

regards bobm

* Robert Monaghan POB752182 Dallas Tx 75275-2182 rmonagha@xxxxxxxxxxxxxxxx  *