diff --git a/src/sampling/sampledSet/uniform/uniformSet.C b/src/sampling/sampledSet/uniform/uniformSet.C
index 397ee24b01..5261a515cc 100644
--- a/src/sampling/sampledSet/uniform/uniformSet.C
+++ b/src/sampling/sampledSet/uniform/uniformSet.C
@@ -55,14 +55,14 @@ bool Foam::uniformSet::nextSample
 {
     bool pointFound = false;
 
-    const vector normOffset = offset/mag(offset);
+    const vector normOffset(offset/mag(offset));
 
     samplePt += offset;
     ++sampleI;
 
     for (; sampleI < nPoints_; ++sampleI)
     {
-        scalar s = (samplePt - currentPt) & normOffset;
+        const scalar s = (samplePt - currentPt) & normOffset;
 
         if (s > -smallDist)
         {
@@ -91,9 +91,8 @@ bool Foam::uniformSet::trackToBoundary
 ) const
 {
     // distance vector between sampling points
-    const vector offset = (end_ - start_)/(nPoints_ - 1);
-    const vector smallVec(tol_*offset);
-    const scalar smallDist = mag(smallVec);
+    const vector offset((end_ - start_)/(nPoints_ - 1));
+    const scalar smallDist = mag(tol_*offset);
 
     point trackPt = singleParticle.position();
 
@@ -204,8 +203,8 @@ void Foam::uniformSet::calcSamples
             << exit(FatalError);
     }
 
-    const vector offset = (end_ - start_)/(nPoints_ - 1);
-    const vector normOffset = offset/mag(offset);
+    const vector offset((end_ - start_)/(nPoints_ - 1));
+    const vector normOffset(offset/mag(offset));
     const vector smallVec(tol_*offset);
     const scalar smallDist = mag(smallVec);
 
@@ -235,7 +234,7 @@ void Foam::uniformSet::calcSamples
     label trackCelli = -1;
     label trackFacei = -1;
 
-    bool isSample =
+    const bool isSample =
         getTrackingPoint
         (
             start_,
@@ -324,7 +323,7 @@ void Foam::uniformSet::calcSamples
 
         while (bHitI < bHits.size())
         {
-            scalar dist =
+            const scalar dist =
                 (bHits[bHitI].hitPoint() - singleParticle.position())
               & normOffset;
 
diff --git a/src/sampling/sampledSet/uniform/uniformSet.H b/src/sampling/sampledSet/uniform/uniformSet.H
index 4654b72a60..84c36ffae7 100644
--- a/src/sampling/sampledSet/uniform/uniformSet.H
+++ b/src/sampling/sampledSet/uniform/uniformSet.H
@@ -28,17 +28,51 @@ Class
     Foam::uniformSet
 
 Description
+    A sampler type which provides a uniform distribution of \c nPoints
+    sample locations along a straight line specified between a given
+    \c start and an \c end points.
 
-    For a dictionary specification:
+Usage
+    Example specification:
+    \verbatim
+    sets
+    (
+        <set>
+        {
+            // Mandatory entries
+            type        uniform;
+            axis        <options>;
+            start       <vector>;
+            end         <vector>;
+            nPoints     <label>;
+
+            // Optional entries
+            tol         <scalar>;
+        }
+
+    );
+    \endverbatim
+
+    where the entries mean:
     \table
-        Property | Description                             | Required | Default
-        type     | uniform                                 | yes      |
-        axis     | x, y, z, xyz, distance                  | yes      |
-        start    | The start point                         | yes      |
-        end      | The end point                           | yes      |
-        nPoints  | The number of points between start/end  | yes
+      Property  | Description                        | Type | Reqd  | Deflt
+      type      | Type name: uniform                 | word | yes   | -
+      axis      | Output type of sample locations    | word | yes   | -
+      start     | Start point of sample line         | vector | yes | -
+      end       | End point of sample line           | vector | yes | -
+      nPoints   | Number of points between start/end | label  | yes | -
+      tol       | Relative tolerance                 | scalar | no  | 1e-3
     \endtable
 
+    Options for the \c axis entry:
+    \verbatim
+      x        | x-ordinate of a sample
+      y        | y-ordinate of a sample
+      z        | z-ordinate of a sample
+      xyz      | x-y-z coordinates of a sample
+      distance | Normal distance to the first point of a sample
+    \endverbatim
+
 SourceFiles
     uniformSet.C
 
@@ -66,17 +100,17 @@ class uniformSet
 {
     // Private Data
 
-        //- Starting point
+        //- Start point of sample line
         point start_;
 
-        //- End point
+        //- End point of sample line
         point end_;
 
         //- Relative tolerance when comparing points
         //- relative to difference between start_ and end_
         scalar tol_;
 
-        //- Number of points
+        //- Number of sampling points
         label nPoints_;