diff --git a/app/controllers/measurements_controller.rb b/app/controllers/measurements_controller.rb
index 4f83655..eb00545 100644
--- a/app/controllers/measurements_controller.rb
+++ b/app/controllers/measurements_controller.rb
@@ -2,7 +2,7 @@ class MeasurementsController < ApplicationController
   menu_item :body_trackers
 
   before_action :init_session_filters
-  before_action :find_project_by_project_id, only: [:index, :new, :create]
+  before_action :find_project_by_project_id, only: [:index, :new, :create, :filter]
   before_action :find_quantity_by_quantity_id, only: [:toggle_column]
   before_action :find_measurement,
     only: [:edit, :update, :destroy, :retake, :readouts, :toggle_column]
@@ -68,6 +68,13 @@ class MeasurementsController < ApplicationController
     render :index
   end
 
+  def filter
+    session[:m_filters][:name] = params[:filters][:name]
+    session[:m_filters][:formula] = params[:filters][:formula]
+    readouts_view? ? prepare_readouts : prepare_measurements
+    render :index
+  end
+
   private
 
   def init_session_filters
@@ -105,10 +112,14 @@ class MeasurementsController < ApplicationController
   end
 
   def prepare_readouts
-    @quantities = @measurement.column_view.quantities
+    @scoping_measurement = @project.measurements.where(session[:m_filters][:scope]).first!
+    @quantities = @scoping_measurement.column_view.quantities
     @measurements, @requested_r, @extra_r, @formula_q = @project.measurements
       .includes(:source)
       .filter(session[:m_filters], @quantities)
+  rescue ActiveRecord::RecordNotFound
+    session[:m_filters][:scope] = {}
+    render_404
   end
 
   def readouts_view?
diff --git a/app/helpers/measurements_helper.rb b/app/helpers/measurements_helper.rb
index f509984..484b873 100644
--- a/app/helpers/measurements_helper.rb
+++ b/app/helpers/measurements_helper.rb
@@ -16,7 +16,7 @@ module MeasurementsHelper
 
   def toggle_column_options
     disabled = []
-    enabled_columns = @measurement.column_view.quantities
+    enabled_columns = @scoping_measurement.column_view.quantities
     options = nested_set_options(@project.quantities.measurement) do |q|
       disabled << q.id if enabled_columns.include?(q)
       raw("#{'&ensp;' * q.level}#{q.name}")
diff --git a/app/views/measurements/_filters.html.erb b/app/views/measurements/_filters.html.erb
new file mode 100644
index 0000000..5d53a83
--- /dev/null
+++ b/app/views/measurements/_filters.html.erb
@@ -0,0 +1,34 @@
+<fieldset id="filters" class="collapsible">
+  <legend onclick="toggleFieldset(this);"><%= l(:label_filter_plural) %></legend>
+  <div>
+    <%= error_messages_for @formula_q %>
+
+    <%= form_tag url, id: 'filters-form', name: 'filters-form',
+      method: :get, remote: true do %>
+
+    <table class="filter">
+      <tr>
+        <td>
+          <%= text_field_tag 'filters[name]', session[:m_filters][:name], placeholder: 'name',
+            onblur: '$("#filters-form").submit(); return false;' %>
+        </td>
+        <td style="width:100%;">
+          <%= text_field_tag 'filters[formula]', session[:m_filters][:formula],
+            placeholder: 'conditional expression including readouts', size: 40,
+            style: 'box-sizing:border-box; width:100%;',
+            onblur: '$("#filters-form").submit(); return false;' %>
+        </td>
+        <td>
+          <%= link_to l(:button_apply), '#', class: "icon icon-checked",
+            onclick: '$("#filters-form").submit(); return false;' %>
+        </td>
+        <td>
+          <%= link_to l(:button_clear), '#', class: "icon icon-reload",
+            onclick: '$("#filters-form input, #filters-form select").val("");
+                      $("#filters-form").submit(); return false;' %>
+        </td>
+      </tr>
+    </table>
+    <% end %>
+  </div>
+</fieldset>
diff --git a/app/views/measurements/_index.html.erb b/app/views/measurements/_index.html.erb
index 365a7a7..dc4d5bc 100644
--- a/app/views/measurements/_index.html.erb
+++ b/app/views/measurements/_index.html.erb
@@ -1,3 +1,6 @@
+<%= render partial: 'measurements/filters',
+  locals: {url: filter_project_measurements_path(@project)} %>
+
 <% if @measurements.any? { |m| m.persisted? } %>
   <table class="list">
     <thead>
diff --git a/app/views/measurements/_options.html.erb b/app/views/measurements/_options.html.erb
index e9c8b89..723656a 100644
--- a/app/views/measurements/_options.html.erb
+++ b/app/views/measurements/_options.html.erb
@@ -1,7 +1,7 @@
 <fieldset id="options" class="collapsible">
   <legend onclick="toggleFieldset(this);"><%= l(:label_options) %></legend>
   <div>
-    <%= form_tag toggle_column_measurement_path(@measurement),
+    <%= form_tag toggle_column_measurement_path(@scoping_measurement),
       id: 'toggle-column-form', name: 'toggle-column-form',
       method: :post, remote: true do %>
 
diff --git a/app/views/measurements/_readouts.html.erb b/app/views/measurements/_readouts.html.erb
index d2ad351..18de1fd 100644
--- a/app/views/measurements/_readouts.html.erb
+++ b/app/views/measurements/_readouts.html.erb
@@ -1,3 +1,6 @@
+<%= render partial: 'measurements/filters',
+  locals: {url: filter_project_measurements_path(@project)} %>
+
 <% if @measurements.any? %>
   <%= render partial: 'measurements/options' %>
 
@@ -9,7 +12,8 @@
         <% @quantities.each do |q| %>
           <th style="width:<%= 100/total_width %>%" class="closable ellipsible">
             <div style="float:right;position:relative;">
-              <%= link_to '', toggle_column_measurement_path(@measurement, quantity_id: q.id),
+              <%= link_to '',
+                toggle_column_measurement_path(@scoping_measurement, quantity_id: q.id),
                 {class: "icon icon-close", method: :post, remote: true} %>
             </div>
             <%= q.name %>
diff --git a/config/routes.rb b/config/routes.rb
index 3973638..acc2c91 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -11,6 +11,9 @@ resources :projects, shallow: true do
           get 'readouts'
           post 'toggle_column'
         end
+        collection do
+          get 'filter'
+        end
       end
       resources :ingredients, only: [:index, :create, :destroy] do
         post 'toggle', on: :member
diff --git a/init.rb b/init.rb
index a661d12..6ab3b67 100644
--- a/init.rb
+++ b/init.rb
@@ -16,7 +16,7 @@ Redmine::Plugin.register :body_tracking do
   project_module :body_tracking do
     permission :view_body_trackers, {
       body_trackers: [:index],
-      measurements: [:index, :readouts],
+      measurements: [:index, :readouts, :filter],
       ingredients: [:index, :nutrients, :filter, :filter_nutrients],
       sources: [:index],
       quantities: [:index, :parents, :filter],