diff --git a/doomsday/apps/gloom/gloom/render/mapbuild.cpp b/doomsday/apps/gloom/gloom/render/mapbuild.cpp
index 207eb33a65..26503f8083 100644
--- a/doomsday/apps/gloom/gloom/render/mapbuild.cpp
+++ b/doomsday/apps/gloom/gloom/render/mapbuild.cpp
@@ -178,7 +178,7 @@ DENG2_PIMPL_NOREF(MapBuild)
                     {
                         const ID pointID = cv.key();
 
-                        f.pos      = cv.value();
+                        f.pos      = cv.value() * map.metersPerUnit();
                         f.texCoord = Vec4f(0, 0, 0, 0); // fixed offset
                         f.expander = expanders[pointID];
 
@@ -327,10 +327,10 @@ DENG2_PIMPL_NOREF(MapBuild)
                              expanders[end],
                              planeIndex,
                              MapVertex::WorldSpaceYToTexCoord,
-                             floor[start],
-                             floor[end],
-                             ceiling[start],
-                             ceiling[end],
+                             floor[start]   * map.metersPerUnit(),
+                             floor[end]     * map.metersPerUnit(),
+                             ceiling[start] * map.metersPerUnit(),
+                             ceiling[end]   * map.metersPerUnit(),
                              length,
                              0);
                 }
@@ -352,10 +352,10 @@ DENG2_PIMPL_NOREF(MapBuild)
                              expanders[end],
                              botIndex,
                              MapVertex::WorldSpaceYToTexCoord | MapVertex::AnchorTopPlane,
-                             floor[start],
-                             floor[end],
-                             backPlaneVerts.front()[start],
-                             backPlaneVerts.front()[end],
+                             floor[start] * map.metersPerUnit(),
+                             floor[end]   * map.metersPerUnit(),
+                             backPlaneVerts.front()[start] * map.metersPerUnit(),
+                             backPlaneVerts.front()[end]   * map.metersPerUnit(),
                              length,
                              0);
 
@@ -366,10 +366,10 @@ DENG2_PIMPL_NOREF(MapBuild)
                              expanders[end],
                              topIndex,
                              MapVertex::WorldSpaceYToTexCoord,
-                             backPlaneVerts.back()[start],
-                             backPlaneVerts.back()[end],
-                             ceiling[start],
-                             ceiling[end],
+                             backPlaneVerts.back()[start] * map.metersPerUnit(),
+                             backPlaneVerts.back()[end]   * map.metersPerUnit(),
+                             ceiling[start] * map.metersPerUnit(),
+                             ceiling[end]   * map.metersPerUnit(),
                              length,
                              0);
                 }
diff --git a/doomsday/apps/gloom/gloom/render/maprender.cpp b/doomsday/apps/gloom/gloom/render/maprender.cpp
index 5d45b206b5..55c5b522e6 100644
--- a/doomsday/apps/gloom/gloom/render/maprender.cpp
+++ b/doomsday/apps/gloom/gloom/render/maprender.cpp
@@ -214,12 +214,14 @@ void MapRender::advanceTime(TimeSpan elapsed)
 
     // Update plane heights.
     {
+        const Vec3d metersPerUnit = context().map->metersPerUnit();
+
         for (auto i = d->planeMapper.begin(), end = d->planeMapper.end(); i != end; ++i)
         {
-            const float planeY = float(context().map->plane(i.key()).point.y); // +
+            const double planeY = context().map->plane(i.key()).point.y; // +
                                  //std::sin(i.value() + now * .1f);
 
-            d->planes.setData(i.value(), planeY);
+            d->planes.setData(i.value(), float(planeY * metersPerUnit.y));
         }
     }
 
diff --git a/doomsday/apps/gloom/gloom/world/map.cpp b/doomsday/apps/gloom/gloom/world/map.cpp
index 8cb9ec0f62..ea879fe705 100644
--- a/doomsday/apps/gloom/gloom/world/map.cpp
+++ b/doomsday/apps/gloom/gloom/world/map.cpp
@@ -32,6 +32,7 @@ namespace gloom {
 DENG2_PIMPL(Map)
 {
     ID       idGen{0};
+    Vec3d    metersPerUnit{1.0, 1.0, 1.0};
     Points   points;
     Lines    lines;
     Planes   planes;
@@ -45,6 +46,7 @@ DENG2_PIMPL(Map)
     Impl(Public *i, const Impl &other)
         : Base(i)
         , idGen(other.idGen)
+        , metersPerUnit(other.metersPerUnit)
         , points(other.points)
         , lines(other.lines)
         , planes(other.planes)
@@ -177,6 +179,16 @@ gloom::ID Map::newID()
     return ++d->idGen;
 }
 
+void Map::setMetersPerUnit(const Vec3d &metersPerUnit)
+{
+    d->metersPerUnit = metersPerUnit;
+}
+
+Vec3d Map::metersPerUnit() const
+{
+    return d->metersPerUnit;
+}
+
 Points &Map::points()
 {
     return d->points;
@@ -735,6 +747,12 @@ Block Map::serialize() const
     const Impl *_d = d;
     QJsonObject obj;
 
+    // Metadata.
+    {
+        obj.insert("metersPerUnit",
+                   QJsonArray({_d->metersPerUnit.x, _d->metersPerUnit.y, _d->metersPerUnit.z}));
+    }
+
     // Points.
     {
         QJsonObject points;
@@ -852,6 +870,15 @@ void Map::deserialize(const Block &data)
         return id;
     };
 
+    // Metadata.
+    {
+        if (map.contains("metersPerUnit"))
+        {
+            const auto mpu = map["metersPerUnit"].toList();
+            d->metersPerUnit = {mpu[0].toDouble(), mpu[1].toDouble(), mpu[2].toDouble()};
+        }
+    }
+
     // Points.
     {
         const auto points = map["points"].toHash();
diff --git a/doomsday/apps/gloom/gloom/world/map.h b/doomsday/apps/gloom/gloom/world/map.h
index d3a7e0e596..2bbbdecd23 100644
--- a/doomsday/apps/gloom/gloom/world/map.h
+++ b/doomsday/apps/gloom/gloom/world/map.h
@@ -137,6 +137,9 @@ class Map
     void removeInvalid();
     ID   newID();
 
+    void  setMetersPerUnit(const Vec3d &metersPerUnit);
+    Vec3d metersPerUnit() const;
+
     template <typename H, typename T>
     ID append(H &hash, const T& value)
     {
diff --git a/doomsday/apps/gloom/gloom/world/mapimport.cpp b/doomsday/apps/gloom/gloom/world/mapimport.cpp
index 74364d673f..cab327f206 100644
--- a/doomsday/apps/gloom/gloom/world/mapimport.cpp
+++ b/doomsday/apps/gloom/gloom/world/mapimport.cpp
@@ -150,6 +150,7 @@ DENG2_PIMPL_NOREF(MapImport)
         const double mapUnit = humanEyeHeight / (levelFormat == DoomFormat ? 41.0 : 48.0);
 
         worldScale = {mapUnit, mapUnit * 1.2, mapUnit}; // VGA aspect ratio for vertical
+        map.setMetersPerUnit(worldScale);
 
         const auto linedefData = lumps.read(headerPos + 2);
 
diff --git a/doomsday/apps/gloom/src/gloomapp.cpp b/doomsday/apps/gloom/src/gloomapp.cpp
index da346007dd..b061494091 100644
--- a/doomsday/apps/gloom/src/gloomapp.cpp
+++ b/doomsday/apps/gloom/src/gloomapp.cpp
@@ -111,6 +111,7 @@ void GloomApp::initialize()
                 {
                     const auto &asset = App::asset(d->editWin->editor().mapId());
                     loadedMap.deserialize(FS::locate<const File>(asset.absolutePath("path")));
+                    //loadedMap.setMetersPerUnit(vectorFromValue<Vec3d>(asset.get("metersPerUnit"));
                 }
 
                 d->world->setMap(loadedMap);