Time signature ID and implementation

[Adam Griggs]

    Hello again
      lilypond-user,
      
      Looking for some advice.
      
      I started with this MS:
http://www.bl.uk/manuscripts/Viewer.aspx?ref=royal_ms_8_g_vii_fs001r
      
      Find attached a montage of the time
        signatures of the four parts.
      
      That looks like 'C2' to me. Anyone concur?
      
      To recreate this, I've started here:
      http://lsr.di.unimi.it/LSR/Item?id=725
      
    
> #(define
>         ((double-time-signature a b) grob)
>            (grob-interpret-markup grob
>                   (markup #:number
>                           (#:line ((markup (#:musicglyph a))
>                                    (#:fontsize -1 b))))))
>         
>         incipitCTwo = \override Score.TimeSignature.stencil = #(
>             double-time-signature  "timesig.mensural44" "2"
>         )
>     
    
      I've almost worked it out but I haven't got the 2 vertically
      centered yet.  Also, the Feta 2 just isn't doing it for me. Just a
      font thing.
      
      Any ideas?

time_sig_montage.jpg
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