diff --git a/plugins/mezuro/lib/kalibro/model.rb b/plugins/mezuro/lib/kalibro/model.rb
index d453f50..1738d2f 100644
--- a/plugins/mezuro/lib/kalibro/model.rb
+++ b/plugins/mezuro/lib/kalibro/model.rb
@@ -50,7 +50,7 @@ class Kalibro::Model
 
   def save
     begin
-      self.class.request(save_endpoint, save_action, save_params)
+      self.id = self.class.request(save_endpoint, save_action, save_params)
 	    true
 	  rescue Exception => exception
 	    add_error exception
diff --git a/plugins/mezuro/lib/kalibro/reading.rb b/plugins/mezuro/lib/kalibro/reading.rb
new file mode 100644
index 0000000..4e6f2fd
--- /dev/null
+++ b/plugins/mezuro/lib/kalibro/reading.rb
@@ -0,0 +1,17 @@
+class Kalibro::Reading < Kalibro::Model
+
+  attr_accessor :id, :label, :grade, :color
+
+  def self.find(id)
+    new request("Reading", :get_reading, {:reading_id => id})[:reading]
+  end
+
+  def self.readings_of( group_id )
+    request("Reading", :readings_of, {:group_id => group_id})[:reading].to_a.map { |reading| new reading }
+  end
+  
+  def self.reading_of( range_id )
+    new request("Reading", :reading_of, {:range_id => range_id} )[:reading]
+  end
+
+end
diff --git a/plugins/mezuro/test/fixtures/reading_fixtures.rb b/plugins/mezuro/test/fixtures/reading_fixtures.rb
new file mode 100644
index 0000000..8db9c35
--- /dev/null
+++ b/plugins/mezuro/test/fixtures/reading_fixtures.rb
@@ -0,0 +1,16 @@
+class ReadingFixtures
+
+  def self.reading
+    Kalibro::Reading.new reading_hash
+  end
+  
+  def self.created_reading # A created object has no id before being sent to kalibro
+    Kalibro::Reading.new :label => "Reading Test Label", :grade => 10.5, :color => "AABBCC"
+  end
+
+  def self.reading_hash
+    {:id => 42, :label => "Reading Test Label", :grade => 10.5, :color => "AABBCC" }
+  end
+
+end
+
diff --git a/plugins/mezuro/test/fixtures/reading_group_fixtures.rb b/plugins/mezuro/test/fixtures/reading_group_fixtures.rb
index a1c9933..fe0ae63 100644
--- a/plugins/mezuro/test/fixtures/reading_group_fixtures.rb
+++ b/plugins/mezuro/test/fixtures/reading_group_fixtures.rb
@@ -4,6 +4,10 @@ class ReadingGroupFixtures
     Kalibro::ReadingGroup.new reading_group_hash
   end
 
+  def self.created_reading_group  # A created object has no id before being sent to kalibro
+    Kalibro::ReadingGroup.new :name => "Reading Group Test", :description => "Reading group in the fixtures"
+  end
+
   def self.reading_group_hash
     {:id => 42, :name => "Reading Group Test", :description => "Reading group in the fixtures"}
   end
diff --git a/plugins/mezuro/test/unit/kalibro/reading_group_test.rb b/plugins/mezuro/test/unit/kalibro/reading_group_test.rb
index 993d7ad..5b54805 100644
--- a/plugins/mezuro/test/unit/kalibro/reading_group_test.rb
+++ b/plugins/mezuro/test/unit/kalibro/reading_group_test.rb
@@ -6,6 +6,7 @@ class ReadingGroupTest < ActiveSupport::TestCase
   def setup  
     @hash = ReadingGroupFixtures.reading_group_hash
     @reading_group = ReadingGroupFixtures.reading_group
+    @created_reading_group = ReadingGroupFixtures.created_reading_group
   end
 
   should 'create reading group from hash' do
@@ -29,7 +30,7 @@ class ReadingGroupTest < ActiveSupport::TestCase
 
   should 'get all reading groups' do
     Kalibro::ReadingGroup.expects(:request).with("ReadingGroup", :all_reading_groups).returns({:reading_group => [@hash]})
-    assert_equal @hash[:name], Kalibro::ReadingGroup.all[0].name
+    assert_equal @hash[:name], Kalibro::ReadingGroup.all.first.name
   end
   
   should 'get reading group of a metric configuration' do
@@ -39,13 +40,16 @@ class ReadingGroupTest < ActiveSupport::TestCase
   end
 
   should 'return true when reading group is saved successfully' do
-    Kalibro::ReadingGroup.expects(:request).with("ReadingGroup", :save_reading_group, {:reading_group => @reading_group.to_hash}).returns(-1)
-    assert @reading_group.save
+    id_from_kalibro = 1
+    Kalibro::ReadingGroup.expects(:request).with("ReadingGroup", :save_reading_group, {:reading_group => @created_reading_group.to_hash}).returns(id_from_kalibro)
+    assert @created_reading_group.save
+    assert_equal id_from_kalibro, @created_reading_group.id
   end
 
   should 'return false when reading group is not saved successfully' do
-    Kalibro::ReadingGroup.expects(:request).with("ReadingGroup", :save_reading_group, {:reading_group => @reading_group.to_hash}).raises(Exception.new)
-    assert !(@reading_group.save)
+    Kalibro::ReadingGroup.expects(:request).with("ReadingGroup", :save_reading_group, {:reading_group => @created_reading_group.to_hash}).raises(Exception.new)
+    assert !(@created_reading_group.save)
+    assert_nil @created_reading_group.id
   end
 
   should 'destroy reading group by id' do
diff --git a/plugins/mezuro/test/unit/kalibro/reading_test.rb b/plugins/mezuro/test/unit/kalibro/reading_test.rb
new file mode 100644
index 0000000..c0bf696
--- /dev/null
+++ b/plugins/mezuro/test/unit/kalibro/reading_test.rb
@@ -0,0 +1,57 @@
+require "test_helper"
+require "#{RAILS_ROOT}/plugins/mezuro/test/fixtures/reading_fixtures"
+
+class ReadingTest < ActiveSupport::TestCase
+
+  def setup  
+    @hash = ReadingFixtures.reading_hash
+    @reading = ReadingFixtures.reading
+    @created_reading = ReadingFixtures.created_reading
+  end
+
+  should 'create reading from hash' do
+    assert_equal @hash[:label], Kalibro::Reading.new(@hash).label
+  end
+  
+  should 'convert reading to hash' do
+    assert_equal @hash, @reading.to_hash
+  end
+  
+  should 'get reading' do
+    Kalibro::Reading.expects(:request).with("Reading", :get_reading, {:reading_id => @hash[:id]}).
+      returns({:reading => @hash})
+    assert_equal @hash[:label], Kalibro::Reading.find(@hash[:id]).label
+  end
+  
+  should 'get reading of a range' do
+    range_id = 31
+    Kalibro::Reading.expects(:request).with("Reading", :reading_of, {:range_id => range_id}).returns({:reading => @hash})
+    assert_equal @hash[:label], Kalibro::Reading.reading_of(range_id).label
+  end
+  
+  should 'get readings of a reading group' do
+    reading_group_id = 31
+    Kalibro::Reading.expects(:request).with("Reading", :readings_of, {:group_id => reading_group_id}).returns({:reading => [@hash]})
+    assert_equal @hash[:label], Kalibro::Reading.readings_of(reading_group_id).first.label
+  end
+
+  should 'return true when reading is saved successfully' do
+    id_from_kalibro = 1
+    Kalibro::Reading.expects(:request).with("Reading", :save_reading, {:reading => @created_reading.to_hash}).returns(id_from_kalibro)
+    assert @created_reading.save
+    assert_equal id_from_kalibro, @created_reading.id
+  end
+
+  should 'return false when reading is not saved successfully' do
+    Kalibro::Reading.expects(:request).with("Reading", :save_reading, {:reading => @created_reading.to_hash}).raises(Exception.new)
+    assert !(@created_reading.save)
+    assert_nil @created_reading.id
+  end
+
+  should 'destroy reading by id' do
+    Kalibro::Reading.expects(:request).with("Reading", :delete_reading, {:reading_id => @reading.id})
+    @reading.destroy
+  end
+  
+end
+
--
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