React.createClass({
  inchChanged(e, val){
    this.props.onInchChange(val);
    // How can I access the 2nd sliders value here?
  },
  render(){
    return (
      <div>
        <Slider onChange={this.inchChanged} name="inchSlider" value={this.props.inchValue} step={1} min={19} max={24}/>
        <Slider name="fractionSlider" value={this.props.fractionValue} step={1} min={19} max={24}/>
      </div>
    )
  }
});