public double value(double v, boolean imperial_units) { return v; }
public double inverse(double v, boolean imperial_unis) { return v; }
public double value(double v, boolean imperial_units) { return v; }
public double inverse(double v, boolean imperial_unis) { return v; }
public String show_units(boolean imperial_units) { return "s"; }
public String say_units(boolean imperial_units) { return "seconds"; }
public String show_units(boolean imperial_units) { return "s"; }
public String say_units(boolean imperial_units) { return "seconds"; }