diff --git a/htdocs/admin/dict.php b/htdocs/admin/dict.php
index 3c19121d424..15cfd9ed9db 100644
--- a/htdocs/admin/dict.php
+++ b/htdocs/admin/dict.php
@@ -503,7 +503,7 @@ $tabhelp[33] = array('code'=>$langs->trans("EnterAnyCode"));
 $tabhelp[34] = array('code'=>$langs->trans("EnterAnyCode"));
 $tabhelp[35] = array();
 $tabhelp[36] = array('range_ik'=>$langs->trans('PrevRangeToThisRange'));
-$tabhelp[37] = array('code'=>$langs->trans("EnterAnyCode"));
+$tabhelp[37] = array('code'=>$langs->trans("EnterAnyCode"), 'unit_type' => $langs->trans('MeasuringUnitTypeDesc'), 'scale' => $langs->trans('MeasuringScaleDesc'));
 $tabhelp[38] = array('code'=>$langs->trans("EnterAnyCode"), 'url' => $langs->trans('UrlSocialNetworksDesc'), 'icon' => $langs->trans('FafaIconSocialNetworksDesc'));
 
 // List of check for fields (NOT USED YET)
diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 96bb77a5064..d19d928cdbd 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -1995,3 +1995,5 @@ PDF_USE_ALSO_LANGUAGE_CODE=If you want to have some texts in your PDF duplicated
 FafaIconSocialNetworksDesc=Enter here the code of a FontAwesome icon. If you don't know what is FontAwesome, you can use the generic value fa-address-book.
 RssNote=Note: Each RSS feed definition provides a widget that you must enable to have it available in dashboard
 JumpToBoxes=Jump to Setup -> Widgets
+MeasuringUnitTypeDesc=For the product units like weight, length, area and volume use "size", "surface", "volume" or "weight" as Unit_type
+MeasuringScaleDesc=The scale for the Unit_types "size", "surface", "volume" and "weight" can only we have values from -127 up to 128.