diff --git a/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Abstractions/Contracts.cs b/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Abstractions/Contracts.cs
index 2eedab3..d8b09a0 100644
--- a/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Abstractions/Contracts.cs
+++ b/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Abstractions/Contracts.cs
@@ -87,6 +87,20 @@ public sealed record GeometrySnapshot
     public double? Elevation { get; init; }
 }
 
+// Platform-neutral result of the legacy GetComponentGeometry contract.  The
+// Plant adapter is responsible for reading Parts/Pipes and normalising units;
+// consumers do not take a dependency on Autodesk managed assemblies.
+public sealed record ComponentGeometryDefinition(
+    string Kind,
+    IReadOnlyDictionary<string, string> Parameters,
+    Bounds3Dto Bounds,
+    bool ImperialDimensions);
+public sealed record ComponentGeometryReadResult(bool Success, ComponentGeometryDefinition? Geometry, string? FailureCode = null);
+public interface IPlantComponentGeometryReader
+{
+    ComponentGeometryReadResult Read(string stableEntityId, bool convertToMetric);
+}
+
 public sealed record OrthoViewportInfo
 {
     public required string Id { get; init; }
diff --git a/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/PRecAnnot.Plant3D2026.csproj b/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/PRecAnnot.Plant3D2026.csproj
index 052bce8..cfe7ca8 100644
--- a/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/PRecAnnot.Plant3D2026.csproj
+++ b/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/PRecAnnot.Plant3D2026.csproj
@@ -14,6 +14,7 @@
     <Reference Include="PnPDataObjects"><HintPath>$(AutoCAD2026ManagedDir)\PnPDataObjects.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
     <Reference Include="PnPProjectManagerMgd"><HintPath>$(Plant3D2026ManagedDir)\PnPProjectManagerMgd.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
     <Reference Include="PnP3dObjectsMgd"><HintPath>$(Plant3D2026ManagedDir)\PnP3dObjectsMgd.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
+    <Reference Include="PnP3dPartsRepository"><HintPath>$(AutoCAD2026ManagedDir)\PnP3dPartsRepository.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
     <Reference Include="PnP3dProjectPartsMgd"><HintPath>$(Plant3D2026ManagedDir)\PnP3dProjectPartsMgd.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
     <Reference Include="PnP3dOrthoProjectPart"><HintPath>$(Plant3D2026ManagedDir)\PnP3dOrthoProjectPart.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
     <Reference Include="PnPDwg2dDef"><HintPath>$(Plant3D2026ManagedDir)\PnPDwg2dDef.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
diff --git a/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/PlantComponentGeometryReader.cs b/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/PlantComponentGeometryReader.cs
new file mode 100644
index 0000000..71bd715
--- /dev/null
+++ b/Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/PlantComponentGeometryReader.cs
@@ -0,0 +1,60 @@
+using Autodesk.AutoCAD.DatabaseServices;
+using Autodesk.ProcessPower.PnP3dObjects;
+using PRecAnnot.Abstractions;
+
+namespace PRecAnnot.Plant3D2026;
+
+// Modern Plant 2026 adapter for the production-useful part of legacy
+// GetComponentGeometry.IsGeometryRead: Pipe dimensions and Part extents are
+// read from the selected source object with explicit unit normalisation.
+internal sealed class PlantComponentGeometryReader(Database database) : IPlantComponentGeometryReader
+{
+    public ComponentGeometryReadResult Read(string stableEntityId, bool convertToMetric)
+    {
+        if (!TryObjectId(stableEntityId, out var id)) return new(false, null, "COMPONENT_GEOMETRY_STABLE_ID_INVALID");
+        try
+        {
+            using var transaction = database.TransactionManager.StartOpenCloseTransaction();
+            if (transaction.GetObject(id, OpenMode.ForRead) is not Entity entity) return new(false, null, "COMPONENT_GEOMETRY_ENTITY_NOT_FOUND");
+            var extents = entity.GeometricExtents;
+            var bounds = new Bounds3Dto(new(extents.MinPoint.X, extents.MinPoint.Y, extents.MinPoint.Z), new(extents.MaxPoint.X, extents.MaxPoint.Y, extents.MaxPoint.Z));
+            if (entity is Pipe pipe)
+            {
+                var factor = Factor(convertToMetric, pipe.PartSizeProperties.LinearUnit);
+                var parameters = new Dictionary<string, string>(StringComparer.Ordinal)
+                {
+                    ["D"] = Format(pipe.OuterDiameter * factor),
+                    ["L"] = Format(pipe.Length * factor)
+                };
+                return new(true, new("CPP", parameters, bounds, factor != 1));
+            }
+            if (entity is Part part)
+            {
+                var factor = Factor(convertToMetric, part.PartSizeProperties.LinearUnit);
+                var parameters = new Dictionary<string, string>(StringComparer.Ordinal)
+                {
+                    ["BoundsX"] = Format((extents.MaxPoint.X - extents.MinPoint.X) * factor),
+                    ["BoundsY"] = Format((extents.MaxPoint.Y - extents.MinPoint.Y) * factor),
+                    ["BoundsZ"] = Format((extents.MaxPoint.Z - extents.MinPoint.Z) * factor)
+                };
+                return new(true, new("PART", parameters, bounds, factor != 1));
+            }
+            return new(false, null, "COMPONENT_GEOMETRY_UNSUPPORTED_ENTITY");
+        }
+        catch (Autodesk.AutoCAD.Runtime.Exception) { return new(false, null, "COMPONENT_GEOMETRY_EXTENTS_UNAVAILABLE"); }
+        catch (Exception) { return new(false, null, "COMPONENT_GEOMETRY_READ_FAILED"); }
+    }
+
+    private bool TryObjectId(string stableEntityId, out ObjectId id)
+    {
+        id = ObjectId.Null;
+        const string prefix = "acad:";
+        if (string.IsNullOrWhiteSpace(stableEntityId) || !stableEntityId.StartsWith(prefix, StringComparison.OrdinalIgnoreCase)) return false;
+        if (!long.TryParse(stableEntityId[prefix.Length..], System.Globalization.NumberStyles.HexNumber, System.Globalization.CultureInfo.InvariantCulture, out var handle)) return false;
+        try { id = database.GetObjectId(false, new Handle(handle), 0); return !id.IsNull; }
+        catch { return false; }
+    }
+
+    private static double Factor(bool convertToMetric, object? unit) => convertToMetric && string.Equals(unit?.ToString(), "Inch", StringComparison.OrdinalIgnoreCase) ? 25.4 : 1d;
+    private static string Format(double value) => value.ToString("0.###############", System.Globalization.CultureInfo.InvariantCulture);
+}
diff --git a/Plant3D2026/P_Rec_Annot/tests/PRecAnnot.Core.Tests/ComponentGeometryContractTests.cs b/Plant3D2026/P_Rec_Annot/tests/PRecAnnot.Core.Tests/ComponentGeometryContractTests.cs
new file mode 100644
index 0000000..729ad15
--- /dev/null
+++ b/Plant3D2026/P_Rec_Annot/tests/PRecAnnot.Core.Tests/ComponentGeometryContractTests.cs
@@ -0,0 +1,15 @@
+using PRecAnnot.Abstractions;
+
+namespace PRecAnnot.Core.Tests;
+
+public sealed class ComponentGeometryContractTests
+{
+    [Fact]
+    public void GeometryDefinition_PreservesStableParametersAndBounds()
+    {
+        var geometry = new ComponentGeometryDefinition("CPP", new Dictionary<string, string> { ["D"] = "25.4", ["L"] = "508" }, new(new(0, 0, 0), new(1, 2, 3)), true);
+        Assert.Equal("25.4", geometry.Parameters["D"]);
+        Assert.Equal(new Point3Dto(1, 2, 3), geometry.Bounds.Maximum);
+        Assert.True(geometry.ImperialDimensions);
+    }
+}