Use a function.

sub build_scale {
    my $frame = shift;

    my $scale = $frame->Scale(
       -width        => '10',
       -length       => '200',
       -sliderlength => '16',
       -orient       => 'horizontal',
       -borderwidth  => '1',
       -cursor       => 'hand2',
       -showvalue    => '0'
    );

    return $scale;
}
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