sliderule

        ____
       /\   \
       \ \   \
        \ \   \
         \ \   \____
         _\_\___\   \
        /\___________\
        \ \   \   \   \
         \ \   \   \   \
          \ \   \   \   \
 ...

___________=======______
|__________!__|__!_____|_______
___)____|__!__|__!____________|
|__________!__|__!_____|
           ==nsg==
 
 ___________/==+==\_____.
[||_________|__|__|___| |_______
_||_)_...

 _____________________________________________________________
|  |"!"|"!"|"!"|"!"|"!"|"!"|"!"|"!"|"!"|"!"|"!"|"!"|"!"|"!"|  |
|  0   1   2   3   4   5   6   7   8   9  10  11  12  13   4  |
|--------...

 
      .----------------.
  ____|.------+-------.|__________________
 | 1'9||'7""6"|5"""4""||3""""""2'''''''''1|
 |____||______|_______||__________________|_______
   \  || | 1''|''''''2||""""3""""4"...

After applying my trusted old knife to some of the pieces...

   ...and breaking the rules for a couple of them...

       ...I finally came to this result:

      ================================================+L____.
     /@'~~~~~~~~--------______\   '...       '...'     .    |
    /@'                        "-     '''...       ..''    /
   /@'       ...

   ,';,               ,';,
 ,' , :;             ; ,,.;
 | |:; :;           ; ;:|.|
 | |::; ';,,,,,,,,,'  ;:|.|    ,,,;;;;;;;;,,,
 ; |''  ___      ___   ';.;,,''             ''';,,,
 ',:   /   \    /  ...

     /\.-./~\
    (o//o)|  \-._         .-"-.
    .~.'~ |  |    )`-----'     \._
   (").'/.|  |          (      /-.\
    (_/-' \_/    |       \    |   \\
           \ /  /   ____.-\  /     ))
        ...

From:  Dave Bird

 The sequences are dead easy e.g.

 space, at, at,    dash, dot, underline,   space;
 bra,   O, space,  space, space, space,    ket;
 space, up, up,    space, up,    up,       space.