diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Measure/Force.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Measure/Force.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,126 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category  Zend
+ * @package   Zend_Measure
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd     New BSD License
+ * @version   $Id: Force.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * Implement needed classes
+ */
+require_once 'Zend/Measure/Abstract.php';
+require_once 'Zend/Locale.php';
+
+/**
+ * Class for handling force conversions
+ *
+ * @category   Zend
+ * @package    Zend_Measure
+ * @subpackage Zend_Measure_Force
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Measure_Force extends Zend_Measure_Abstract
+{
+    const STANDARD = 'NEWTON';
+
+    const ATTONEWTON      = 'ATTONEWTON';
+    const CENTINEWTON     = 'CENTINEWTON';
+    const DECIGRAM_FORCE  = 'DECIGRAM_FORCE';
+    const DECINEWTON      = 'DECINEWTON';
+    const DEKAGRAM_FORCE  = 'DEKAGRAM_FORCE';
+    const DEKANEWTON      = 'DEKANEWTON';
+    const DYNE            = 'DYNE';
+    const EXANEWTON       = 'EXANEWTON';
+    const FEMTONEWTON     = 'FEMTONEWTON';
+    const GIGANEWTON      = 'GIGANEWTON';
+    const GRAM_FORCE      = 'GRAM_FORCE';
+    const HECTONEWTON     = 'HECTONEWTON';
+    const JOULE_PER_METER = 'JOULE_PER_METER';
+    const KILOGRAM_FORCE  = 'KILOGRAM_FORCE';
+    const KILONEWTON      = 'KILONEWTON';
+    const KILOPOND        = 'KILOPOND';
+    const KIP             = 'KIP';
+    const MEGANEWTON      = 'MEGANEWTON';
+    const MEGAPOND        = 'MEGAPOND';
+    const MICRONEWTON     = 'MICRONEWTON';
+    const MILLINEWTON     = 'MILLINEWTON';
+    const NANONEWTON      = 'NANONEWTON';
+    const NEWTON          = 'NEWTON';
+    const OUNCE_FORCE     = 'OUNCE_FORCE';
+    const PETANEWTON      = 'PETANEWTON';
+    const PICONEWTON      = 'PICONEWTON';
+    const POND            = 'POND';
+    const POUND_FORCE     = 'POUND_FORCE';
+    const POUNDAL         = 'POUNDAL';
+    const STHENE          = 'STHENE';
+    const TERANEWTON      = 'TERANEWTON';
+    const TON_FORCE_LONG  = 'TON_FORCE_LONG';
+    const TON_FORCE       = 'TON_FORCE';
+    const TON_FORCE_SHORT = 'TON_FORCE_SHORT';
+    const YOCTONEWTON     = 'YOCTONEWTON';
+    const YOTTANEWTON     = 'YOTTANEWTON';
+    const ZEPTONEWTON     = 'ZEPTONEWTON';
+    const ZETTANEWTON     = 'ZETTANEWTON';
+
+    /**
+     * Calculations for all force units
+     *
+     * @var array
+     */
+    protected $_units = array(
+        'ATTONEWTON'      => array('1.0e-18',     'aN'),
+        'CENTINEWTON'     => array('0.01',        'cN'),
+        'DECIGRAM_FORCE'  => array('0.000980665', 'dgf'),
+        'DECINEWTON'      => array('0.1',         'dN'),
+        'DEKAGRAM_FORCE'  => array('0.0980665',   'dagf'),
+        'DEKANEWTON'      => array('10',          'daN'),
+        'DYNE'            => array('0.00001',     'dyn'),
+        'EXANEWTON'       => array('1.0e+18',     'EN'),
+        'FEMTONEWTON'     => array('1.0e-15',     'fN'),
+        'GIGANEWTON'      => array('1.0e+9',      'GN'),
+        'GRAM_FORCE'      => array('0.00980665',  'gf'),
+        'HECTONEWTON'     => array('100',         'hN'),
+        'JOULE_PER_METER' => array('1',           'J/m'),
+        'KILOGRAM_FORCE'  => array('9.80665',     'kgf'),
+        'KILONEWTON'      => array('1000',        'kN'),
+        'KILOPOND'        => array('9.80665',     'kp'),
+        'KIP'             => array('4448.2216',   'kip'),
+        'MEGANEWTON'      => array('1000000',     'Mp'),
+        'MEGAPOND'        => array('9806.65',     'MN'),
+        'MICRONEWTON'     => array('0.000001',    'µN'),
+        'MILLINEWTON'     => array('0.001',       'mN'),
+        'NANONEWTON'      => array('0.000000001', 'nN'),
+        'NEWTON'          => array('1',           'N'),
+        'OUNCE_FORCE'     => array('0.27801385',  'ozf'),
+        'PETANEWTON'      => array('1.0e+15',     'PN'),
+        'PICONEWTON'      => array('1.0e-12',     'pN'),
+        'POND'            => array('0.00980665',  'pond'),
+        'POUND_FORCE'     => array('4.4482216',   'lbf'),
+        'POUNDAL'         => array('0.13825495',  'pdl'),
+        'STHENE'          => array('1000',        'sn'),
+        'TERANEWTON'      => array('1.0e+12',     'TN'),
+        'TON_FORCE_LONG'  => array('9964.016384', 'tnf'),
+        'TON_FORCE'       => array('9806.65',     'tnf'),
+        'TON_FORCE_SHORT' => array('8896.4432',   'tnf'),
+        'YOCTONEWTON'     => array('1.0e-24',     'yN'),
+        'YOTTANEWTON'     => array('1.0e+24',     'YN'),
+        'ZEPTONEWTON'     => array('1.0e-21',     'zN'),
+        'ZETTANEWTON'     => array('1.0e+21',     'ZN'),
+        'STANDARD'        => 'NEWTON'
+    );
+}