diff --git a/crates/fj-core/src/algorithms/approx/circle.rs b/crates/fj-core/src/algorithms/approx/circle.rs
index 900e6a367..2202914cd 100644
--- a/crates/fj-core/src/algorithms/approx/circle.rs
+++ b/crates/fj-core/src/algorithms/approx/circle.rs
@@ -2,9 +2,7 @@ use std::iter;
 
 use fj_math::{Circle, Point, Scalar, Sign};
 
-use crate::geometry::CurveBoundary;
-
-use super::Tolerance;
+use crate::geometry::{CurveBoundary, Tolerance};
 
 /// # Approximate a circle
 ///
@@ -135,7 +133,7 @@ mod tests {
 
     use fj_math::{Circle, Point, Scalar};
 
-    use crate::{algorithms::approx::Tolerance, geometry::CurveBoundary};
+    use crate::geometry::{CurveBoundary, Tolerance};
 
     use super::PathApproxParams;
 
diff --git a/crates/fj-core/src/algorithms/approx/curve.rs b/crates/fj-core/src/algorithms/approx/curve.rs
index 5a6b127c9..b5741923b 100644
--- a/crates/fj-core/src/algorithms/approx/curve.rs
+++ b/crates/fj-core/src/algorithms/approx/curve.rs
@@ -3,12 +3,12 @@ use std::collections::BTreeMap;
 use fj_math::{Circle, Line, Point};
 
 use crate::{
-    geometry::{CurveBoundary, Geometry, Path, SurfaceGeom},
+    geometry::{CurveBoundary, Geometry, Path, SurfaceGeom, Tolerance},
     storage::Handle,
     topology::{Curve, Surface},
 };
 
-use super::{circle::approx_circle, line::approx_line, ApproxPoint, Tolerance};
+use super::{circle::approx_circle, line::approx_line, ApproxPoint};
 
 /// Approximate the provided curve
 ///
diff --git a/crates/fj-core/src/algorithms/approx/cycle.rs b/crates/fj-core/src/algorithms/approx/cycle.rs
index fe7113a29..85e967ad0 100644
--- a/crates/fj-core/src/algorithms/approx/cycle.rs
+++ b/crates/fj-core/src/algorithms/approx/cycle.rs
@@ -5,7 +5,7 @@
 use fj_math::Segment;
 
 use crate::{
-    geometry::{CurveBoundary, Geometry},
+    geometry::{CurveBoundary, Geometry, Tolerance},
     storage::Handle,
     topology::{Cycle, Surface},
 };
@@ -13,7 +13,7 @@ use crate::{
 use super::{
     half_edge::{approx_half_edge, HalfEdgeApprox},
     vertex::approx_vertex,
-    ApproxCache, ApproxPoint, Tolerance,
+    ApproxCache, ApproxPoint,
 };
 
 /// Approximate the provided cycle
diff --git a/crates/fj-core/src/algorithms/approx/face.rs b/crates/fj-core/src/algorithms/approx/face.rs
index 9472972cf..d8e3e3c98 100644
--- a/crates/fj-core/src/algorithms/approx/face.rs
+++ b/crates/fj-core/src/algorithms/approx/face.rs
@@ -5,7 +5,7 @@
 use std::{collections::BTreeSet, ops::Deref};
 
 use crate::{
-    geometry::Geometry,
+    geometry::{Geometry, Tolerance},
     storage::Handle,
     topology::{Face, Handedness, ObjectSet},
     validation::ValidationConfig,
@@ -13,7 +13,7 @@ use crate::{
 
 use super::{
     cycle::{approx_cycle, CycleApprox},
-    Approx, ApproxCache, ApproxPoint, Tolerance,
+    Approx, ApproxCache, ApproxPoint,
 };
 
 impl Approx for &ObjectSet<Face> {
diff --git a/crates/fj-core/src/algorithms/approx/half_edge.rs b/crates/fj-core/src/algorithms/approx/half_edge.rs
index 270e2614c..6e36d26cc 100644
--- a/crates/fj-core/src/algorithms/approx/half_edge.rs
+++ b/crates/fj-core/src/algorithms/approx/half_edge.rs
@@ -7,14 +7,14 @@ use std::iter;
 use fj_math::Point;
 
 use crate::{
-    geometry::{CurveBoundary, Geometry},
+    geometry::{CurveBoundary, Geometry, Tolerance},
     storage::Handle,
     topology::{HalfEdge, Surface},
 };
 
 use super::{
     curve::{approx_curve_with_cache, CurveApproxCache},
-    ApproxPoint, Tolerance,
+    ApproxPoint,
 };
 
 /// Approximate the provided half-edge
diff --git a/crates/fj-core/src/algorithms/bounding_volume/face.rs b/crates/fj-core/src/algorithms/bounding_volume/face.rs
index e0f36a082..9eb21f036 100644
--- a/crates/fj-core/src/algorithms/bounding_volume/face.rs
+++ b/crates/fj-core/src/algorithms/bounding_volume/face.rs
@@ -3,8 +3,7 @@ use std::ops::Deref;
 use fj_math::{Aabb, Vector};
 
 use crate::{
-    algorithms::approx::Tolerance,
-    geometry::{Geometry, Path, SurfaceGeom},
+    geometry::{Geometry, Path, SurfaceGeom, Tolerance},
     topology::Face,
 };
 
diff --git a/crates/fj-core/src/algorithms/triangulate/mod.rs b/crates/fj-core/src/algorithms/triangulate/mod.rs
index ad6d3606d..09b90a76b 100644
--- a/crates/fj-core/src/algorithms/triangulate/mod.rs
+++ b/crates/fj-core/src/algorithms/triangulate/mod.rs
@@ -6,11 +6,11 @@ mod polygon;
 use fj_interop::Mesh;
 use fj_math::Point;
 
-use crate::{operations::presentation::GetColor, Core};
+use crate::{geometry::Tolerance, operations::presentation::GetColor, Core};
 
 use self::polygon::Polygon;
 
-use super::approx::{face::FaceApprox, Approx, Tolerance};
+use super::approx::{face::FaceApprox, Approx};
 
 /// Triangulate a shape
 pub trait Triangulate: Sized {
@@ -80,7 +80,8 @@ mod tests {
     use fj_math::{Point, Scalar};
 
     use crate::{
-        algorithms::approx::{face::approx_face, ApproxCache, Tolerance},
+        algorithms::approx::{face::approx_face, ApproxCache},
+        geometry::Tolerance,
         operations::{
             build::{BuildCycle, BuildFace},
             insert::Insert,
diff --git a/crates/fj-core/src/core.rs b/crates/fj-core/src/core.rs
index 1da8f7b79..f62fd3a63 100644
--- a/crates/fj-core/src/core.rs
+++ b/crates/fj-core/src/core.rs
@@ -3,7 +3,7 @@
 //! See [`Core`].
 
 use crate::{
-    algorithms::approx::Tolerance, layers::Layers, validation::ValidationConfig,
+    geometry::Tolerance, layers::Layers, validation::ValidationConfig,
 };
 
 /// An instance of the Fornjot core
diff --git a/crates/fj-core/src/geometry/curve.rs b/crates/fj-core/src/geometry/curve.rs
index 3d036ff68..ad3d622d2 100644
--- a/crates/fj-core/src/geometry/curve.rs
+++ b/crates/fj-core/src/geometry/curve.rs
@@ -3,12 +3,10 @@ use std::collections::BTreeMap;
 use fj_math::{Circle, Line, Point};
 
 use crate::{
-    algorithms::approx::{PathApproxParams, Tolerance},
-    storage::Handle,
-    topology::Surface,
+    algorithms::approx::PathApproxParams, storage::Handle, topology::Surface,
 };
 
-use super::Path;
+use super::{Path, Tolerance};
 
 /// The geometric definition of a curve
 #[derive(Clone, Debug, Default)]
diff --git a/crates/fj-core/src/geometry/surface.rs b/crates/fj-core/src/geometry/surface.rs
index f3e229117..a3371ab59 100644
--- a/crates/fj-core/src/geometry/surface.rs
+++ b/crates/fj-core/src/geometry/surface.rs
@@ -2,9 +2,7 @@
 
 use fj_math::{Point, Scalar, Transform, Triangle, Vector};
 
-use crate::algorithms::approx::Tolerance;
-
-use super::{CurveGeom2, Path};
+use super::{CurveGeom2, Path, Tolerance};
 
 /// The geometry that defines a surface
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Hash, Ord, PartialOrd)]
@@ -115,10 +113,7 @@ mod tests {
     use fj_math::{Line, Point, Vector};
     use pretty_assertions::assert_eq;
 
-    use crate::{
-        algorithms::approx::Tolerance,
-        geometry::{Path, SurfaceGeom},
-    };
+    use crate::geometry::{Path, SurfaceGeom, Tolerance};
 
     #[test]
     fn point_from_surface_coords() {
diff --git a/crates/fj-core/src/validation/checks/coincident_half_edges_are_not_siblings.rs b/crates/fj-core/src/validation/checks/coincident_half_edges_are_not_siblings.rs
index 404602260..428c7522c 100644
--- a/crates/fj-core/src/validation/checks/coincident_half_edges_are_not_siblings.rs
+++ b/crates/fj-core/src/validation/checks/coincident_half_edges_are_not_siblings.rs
@@ -3,8 +3,7 @@ use std::fmt;
 use fj_math::{Point, Scalar};
 
 use crate::{
-    algorithms::approx::Tolerance,
-    geometry::{CurveBoundary, Geometry},
+    geometry::{CurveBoundary, Geometry, Tolerance},
     queries::{
         AllHalfEdgesWithSurface, BoundingVerticesOfHalfEdge, CycleOfHalfEdge,
         SiblingOfHalfEdge,
diff --git a/crates/fj-core/src/validation/config.rs b/crates/fj-core/src/validation/config.rs
index dc763c24d..5351a570f 100644
--- a/crates/fj-core/src/validation/config.rs
+++ b/crates/fj-core/src/validation/config.rs
@@ -1,6 +1,6 @@
 use fj_math::Scalar;
 
-use crate::algorithms::approx::Tolerance;
+use crate::geometry::Tolerance;
 
 /// Configuration required for the validation process
 #[derive(Debug, Clone, Copy)]
diff --git a/crates/fj/src/args.rs b/crates/fj/src/args.rs
index 28134c6a1..88f39e022 100644
--- a/crates/fj/src/args.rs
+++ b/crates/fj/src/args.rs
@@ -1,6 +1,6 @@
 use std::{num::ParseFloatError, path::PathBuf, str::FromStr};
 
-use fj_core::algorithms::approx::{InvalidTolerance, Tolerance};
+use fj_core::geometry::{InvalidTolerance, Tolerance};
 use fj_math::Scalar;
 
 /// Standardized CLI for Fornjot models
diff --git a/crates/fj/src/instance.rs b/crates/fj/src/instance.rs
index a6f147aec..3aea54988 100644
--- a/crates/fj/src/instance.rs
+++ b/crates/fj/src/instance.rs
@@ -1,11 +1,8 @@
 use std::{error::Error as _, fmt};
 
 use fj_core::{
-    algorithms::{
-        approx::{InvalidTolerance, Tolerance},
-        bounding_volume::BoundingVolume,
-        triangulate::Triangulate,
-    },
+    algorithms::{bounding_volume::BoundingVolume, triangulate::Triangulate},
+    geometry::{InvalidTolerance, Tolerance},
     validation::{ValidationConfig, ValidationErrors},
     Core,
 };