\version "2.19.65"

\score {
  \layout {
    #(layout-set-staff-size 15)
  }
  \new Staff { g' a' }
}

\score {
  \new Staff { g' a' }
}

\score {
  \layout {
    #(layout-set-staff-size 40)
  }
  \new Staff { g' a' }
}

\score {
  \layout {
    #(layout-set-staff-size 80)
  }
  \new Staff { g' a' }
}


\score {
  \layout {
    #(layout-set-staff-size 15)
  }
  \new Staff \with {
    \remove Time_signature_engraver
  }{ g' a' }
}

\score {
  \new Staff \with {
    \remove Time_signature_engraver
  }{ g' a' }
}

\score {
  \layout {
    #(layout-set-staff-size 40)
  }
  \new Staff \with {
    \remove Time_signature_engraver
  }{ g' a' }
}

\score {
  \layout {
    #(layout-set-staff-size 80)
  }
  \new Staff \with {
    \remove Time_signature_engraver
  }{ g' a' }
}