diff --git a/app/helpers/measurements_helper.rb b/app/helpers/measurements_helper.rb
index cb642a9..e13348e 100644
--- a/app/helpers/measurements_helper.rb
+++ b/app/helpers/measurements_helper.rb
@@ -1,2 +1,19 @@
 module MeasurementsHelper
+  def quantity_options
+    nested_set_options(@project.quantities.measurement) do |q|
+      raw("#{' ' * q.level}#{q.name}")
+    end
+  end
+
+  def unit_options
+    @project.units.map do |u|
+      [u.shortname, u.id]
+    end
+  end
+
+  def source_options
+    @project.sources.map do |s|
+      [s.name, s.id]
+    end
+  end
 end
diff --git a/app/views/measurements/_form.html.erb b/app/views/measurements/_form.html.erb
index e47e2f8..ab898e5 100644
--- a/app/views/measurements/_form.html.erb
+++ b/app/views/measurements/_form.html.erb
@@ -9,7 +9,7 @@
     <div class="box tabular">
       <p><%= f.text_field :name, size: 40, required: true %></p>
       <p><%= f.select :source_id, source_options, required: false, include_blank: true %></p>
-      <% @measurements.readouts.each_with_index do |r, index| %>
+      <% @measurement.readouts.each_with_index do |r, index| %>
         <%= f.fields_for 'readouts_attributes', r, index: '' do |ff| %>
           <p class="readout">
             <%= ff.select :quantity_id, quantity_options,
diff --git a/config/locales/en.yml b/config/locales/en.yml
index a01c557..8997c3b 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -53,6 +53,8 @@ en:
   measurements:
     form:
       heading_new_measurement: 'New measurement'
+      button_add_readout: 'Add readout'
+      button_delete_readout: 'Delete'
     index:
       heading: 'Measurements'
       link_new_measurement: 'New measurement'