code: function(label) {
  		var me = this;
  		var ticksOpts = me.options.ticks;
  		var tickLabelWidth = me.ctx.measureText(label).width;
  		var angle = helpers.toRadians(ticksOpts.maxRotation);
  		var cosRotation = Math.cos(angle);
  		var sinRotation = Math.sin(angle);
  		var tickFontSize = valueOrDefault(ticksOpts.fontSize, defaults.global.defaultFontSize);
  
  		return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
  	}
docs: Crude approximation of what the label width might be
  @private