Approval.

hi/measurement_type_set.php

@@ -34,4 +34,8 @@ $measurement_type_set = array (
   'length_blade' => 'Length of blade',
   'height_blade' => 'Height of blade',
   'width_blade' => 'Width of blade',
+  'number_of_sheets' => 'Number of sheets',
+  'number_of_double_pages' => 'Number of double pages',
+  'number_of_standalone_pages' => 'Number of standalone pages',
+  'number_of_written_pages' => 'Number of written pages',
 );