text: 'use strict';
  
  module.exports = require('./quantity')('Mass')
      .base('Gram', {
          names: [ 'g', 'gram', 'grams', 'gramme', 'grammes' ],
          prefix: true,
  		exposePrefixes: [ 'kilo' ]
      })
      .add('Pound', {
          names: [ 'lb', 'lbs', 'pound', 'pounds', '#' ],
          scale: 453.592
      })
      .add('Ounce', {
          names: [ 'oz', 'ounce', 'ounces' ],
          scale: 28.3495
      })
      .add('Stone', {
          names: [ 'st', 'stone', 'stones' ],
          scale: 6350.29318
      })
      .build();
  