diff --git a/nionswift_plugin/nion_experimental_tools/GraphicsTools.py b/nionswift_plugin/nion_experimental_tools/GraphicsTools.py
deleted file mode 100644
index 6ba3f04..0000000
--- a/nionswift_plugin/nion_experimental_tools/GraphicsTools.py
+++ /dev/null
@@ -1,41 +0,0 @@
-# system imports
-import gettext
-import typing
-
-# local libraries
-from nion.typeshed import API_1_0 as API
-
-_ = gettext.gettext
-
-
-class AlignToCenterMenuItem:
-
-    menu_id = "_edit_menu"  # required, specify menu_id where this item will go
-    menu_item_name = _("Align Graphic to Center")  # menu item name
-
-    def menu_item_execute(self, window: API.DocumentWindow) -> None:
-        target_display = window.target_display
-        if target_display:
-            _display_item = target_display._display_item
-            if _display_item.graphic_selection.has_selection:
-                graphics = [_display_item.graphics[index] for index in _display_item.graphic_selection.indexes]
-                for graphic in graphics:
-                    if hasattr(graphic, "position"):
-                        graphic.position = (0.5, 0.5)
-                    if hasattr(graphic, "center"):
-                        graphic.center = (0.5, 0.5)
-
-
-class GraphicsToolsExtension:
-
-    # required for Swift to recognize this as an extension class.
-    extension_id = "nionswift.graphics_tools"
-
-    def __init__(self, api_broker: typing.Any) -> None:
-        # grab the api object.
-        api = api_broker.get_api(version="1", ui_version="1")
-        # be sure to keep a reference or it will be closed immediately.
-        self.__menu_item_ref = api.create_menu_item(AlignToCenterMenuItem())
-
-    def close(self) -> None:
-        self.__menu_item_ref.close()
diff --git a/nionswift_plugin/nion_experimental_tools/__init__.py b/nionswift_plugin/nion_experimental_tools/__init__.py
index 7bfdb2e..1208047 100755
--- a/nionswift_plugin/nion_experimental_tools/__init__.py
+++ b/nionswift_plugin/nion_experimental_tools/__init__.py
@@ -4,7 +4,6 @@
 from nion.swift.model import Symbolic
 
 from . import DoubleGaussian
-from . import GraphicsTools
 from . import SequenceSplitJoin
 from . import AlignMultiSI
 from . import MakeIDPC