diff --git a/crates/fj-viewer/src/input/mod.rs b/crates/fj-viewer/src/input/mod.rs
index b01530a57..ac945f120 100644
--- a/crates/fj-viewer/src/input/mod.rs
+++ b/crates/fj-viewer/src/input/mod.rs
@@ -13,3 +13,21 @@ pub enum MouseButton {
     /// # The right mouse button
     Right,
 }
+
+/// # Sensitivity of camera zoom, given scroll wheel input in lines
+///
+/// Given a specific input, smaller values mean that the camera moves less,
+/// larger values mean it moves more.
+pub const CAMERA_ZOOM_SENSITIVITY_LINE: f64 = 0.075;
+
+/// # Sensitivity of camera zoom, given scroll wheel input in pixels
+///
+/// Given a specific input, smaller values mean that the camera moves less,
+/// larger values mean it moves more.
+pub const CAMERA_ZOOM_SENSITIVITY_PIXEL: f64 = 0.005;
+
+/// # Sensitivity of camera rotation
+///
+/// Given a specific input, smaller values mean that the camera rotates less,
+/// larger values mean it rotates more.
+pub const CAMERA_ROTATION_SENSITIVITY: f64 = 5.;
diff --git a/crates/fj-viewer/src/lib.rs b/crates/fj-viewer/src/lib.rs
index 13e0da023..99cc02e8a 100644
--- a/crates/fj-viewer/src/lib.rs
+++ b/crates/fj-viewer/src/lib.rs
@@ -18,7 +18,10 @@ mod viewer;
 pub use self::{
     graphics::{DeviceError, RendererInitError},
     input::InputEvent,
-    input::MouseButton,
+    input::{
+        MouseButton, CAMERA_ROTATION_SENSITIVITY, CAMERA_ZOOM_SENSITIVITY_LINE,
+        CAMERA_ZOOM_SENSITIVITY_PIXEL,
+    },
     screen::{NormalizedScreenPosition, Screen, ScreenSize},
     viewer::Viewer,
 };
diff --git a/crates/fj-window/src/display.rs b/crates/fj-window/src/display.rs
index f204a3cf1..b7811241b 100644
--- a/crates/fj-window/src/display.rs
+++ b/crates/fj-window/src/display.rs
@@ -1,7 +1,8 @@
 use fj_interop::Model;
 use fj_viewer::{
     InputEvent, NormalizedScreenPosition, RendererInitError, Screen,
-    ScreenSize, Viewer,
+    ScreenSize, Viewer, CAMERA_ROTATION_SENSITIVITY,
+    CAMERA_ZOOM_SENSITIVITY_LINE, CAMERA_ZOOM_SENSITIVITY_PIXEL,
 };
 use futures::executor::block_on;
 use winit::{
@@ -225,21 +226,3 @@ fn input_event(
         _ => None,
     }
 }
-
-/// # Sensitivity of camera zoom, given scroll wheel input in lines
-///
-/// Given a specific input, smaller values mean that the camera moves less,
-/// larger values mean it moves more.
-const CAMERA_ZOOM_SENSITIVITY_LINE: f64 = 0.075;
-
-/// # Sensitivity of camera zoom, given scroll wheel input in pixels
-///
-/// Given a specific input, smaller values mean that the camera moves less,
-/// larger values mean it moves more.
-const CAMERA_ZOOM_SENSITIVITY_PIXEL: f64 = 0.005;
-
-/// # Sensitivity of camera rotation
-///
-/// Given a specific input, smaller values mean that the camera rotates less,
-/// larger values mean it rotates more.
-const CAMERA_ROTATION_SENSITIVITY: f64 = 5.;