diff --git a/Elwig/Helpers/Weighing/SchemberScale.cs b/Elwig/Helpers/Weighing/SchemberScale.cs
index 52b1ce1..329e117 100644
--- a/Elwig/Helpers/Weighing/SchemberScale.cs
+++ b/Elwig/Helpers/Weighing/SchemberScale.cs
@@ -13,10 +13,7 @@ namespace Elwig.Helpers.Weighing {
         public string? LogPath => throw new NotImplementedException();
 
         public void Dispose() {
-            throw new NotImplementedException();
+            GC.SuppressFinalize(this);
         }
-
-
-
     }
 }
diff --git a/Elwig/Helpers/Weighing/WeighingResult.cs b/Elwig/Helpers/Weighing/WeighingResult.cs
index 25d77e5..6cb4d77 100644
--- a/Elwig/Helpers/Weighing/WeighingResult.cs
+++ b/Elwig/Helpers/Weighing/WeighingResult.cs
@@ -4,36 +4,38 @@ namespace Elwig.Helpers.Weighing {
     /// <summary>
     /// Result of a weighing process on an industrial scale
     /// </summary>
-    public class WeighingResult {
+    public struct WeighingResult {
         /// <summary>
         /// Measured net weight in kg
         /// </summary>
-        public int? Weight = null;
+        public int? Weight;
 
         /// <summary>
         /// Weighing id (or IdentNr) provided by the scale
         /// </summary>
-        public string? WeighingId = null;
+        public string? WeighingId;
 
         /// <summary>
         /// Wheighing id (or IdentNr) provided by the scale optionally combined with the current date
         /// </summary>
-        public string? FullWeighingId = null;
+        public string? FullWeighingId;
 
         /// <summary>
         /// Date string provided by the scale
         /// </summary>
-        public DateOnly? Date = null;
+        public DateOnly? Date;
 
         /// <summary>
         /// Time string provided by the scale
         /// </summary>
-        public TimeOnly? Time = null;
+        public TimeOnly? Time;
 
         /// <returns>&lt;Weight/WeighingId/Date/Time&gt;</returns>
-        override public string ToString() {
+        public override readonly string ToString() {
             var w = Weight != null ? $"{Weight}kg" : "";
             return $"<{w}/{WeighingId}/{Date:yyyy-MM-dd}/{Time:HH:mm}>";
         }
+
+
     }
 }
diff --git a/Tests/WeighingTests/MockScale.cs b/Tests/WeighingTests/MockScale.cs
new file mode 100644
index 0000000..9da6698
--- /dev/null
+++ b/Tests/WeighingTests/MockScale.cs
@@ -0,0 +1,71 @@
+using System.Net.Sockets;
+using System.Net;
+using System.Text;
+
+namespace Tests.WeighingTests {
+    public abstract class MockScale : IDisposable {
+
+        protected readonly TcpListener Server;
+
+        public int IdentNr { get; set; } = 0;
+        public int Weight { get; set; } = 0;
+        public string? Error { get; set; } = null;
+
+        protected MockScale(int port) {
+            Server = new TcpListener(IPAddress.Loopback, port);
+            Server.Start(4);
+        }
+
+        public void Dispose() {
+            Server.Dispose();
+            GC.SuppressFinalize(this);
+        }
+    }
+
+    public class CommandMockScale : MockScale {
+
+        private readonly Func<string, int, string?, int, (string, bool)> Handler;
+        private readonly Thread ServerThread;
+        private bool IsRunning = true;
+
+        public CommandMockScale(int port, Func<string, int, string?, int, (string, bool)> handler) :
+            base(port) {
+            Handler = handler;
+            ServerThread = new Thread(new ParameterizedThreadStart(Serve));
+            ServerThread.Start();
+        }
+
+        private async void Serve(object? parameters) {
+            byte[] buffer = new byte[16];
+            while (IsRunning) {
+                try {
+                    using var client = await Server.AcceptTcpClientAsync();
+                    if (client == null) continue;
+                    using var stream = client.GetStream();
+                    while (true) {
+                        int read = await stream.ReadAsync(buffer);
+                        var (res, inc) = Handler(Encoding.ASCII.GetString(buffer, 0, read), Weight, Error, IdentNr + 1);
+                        if (inc) IdentNr++;
+                        await stream.WriteAsync(Encoding.ASCII.GetBytes(res));
+                    }
+                } catch (Exception) {
+                    // ignore
+                }
+            }
+        }
+
+        public new void Dispose() {
+            IsRunning = false;
+            ServerThread.Interrupt();
+            ServerThread.Join();
+            base.Dispose();
+        }
+    }
+
+    public class EventMockScale : MockScale {
+        public EventMockScale(int port, Func<int, string?, int, (string, bool)> handler) :
+            base(port) {
+            // TODO
+        }
+    }
+}
diff --git a/Tests/WeighingTests/ScaleTestMatzen.cs b/Tests/WeighingTests/ScaleTestMatzen.cs
new file mode 100644
index 0000000..5837883
--- /dev/null
+++ b/Tests/WeighingTests/ScaleTestMatzen.cs
@@ -0,0 +1,93 @@
+using Elwig.Helpers.Weighing;
+
+namespace Tests.WeighingTests {
+    [TestFixture]
+    class ScaleTestMatzen {
+
+        private MockScale? Mock;
+        private SystecScale? Scale;
+
+        private static (string, bool) ScaleHandler(string req, int weight, string? error, int identNr) {
+            bool incr = false;
+            if (!req.StartsWith('<') || !req.EndsWith('>'))
+                return ("<31>\r\n", incr);
+            req = req[1..^1];
+
+            if (req.Length > 3) {
+                return ("<32>\r\n", incr);
+            } else if (req.StartsWith("RN")) {
+                incr = true;
+            } else if (req.StartsWith("RM")) {
+                incr = false;
+            } else {
+                return ("<32>\r\n", incr);
+            }
+
+            var modes = error?.Split(';') ?? [];
+            if (weight == 0) {
+                incr = false;
+            }
+
+            bool moving = modes.Contains("moving");
+            string data = $"00{(moving ? 1 : 0)}0{DateTime.Now:dd.MM.yyHH:mm}{(incr ? identNr : 0),4}1{weight,8}{0,8}{weight,8}kg   {1,3}";
+            return ($"<{data}{Elwig.Helpers.Utils.CalcCrc16Modbus(data),8}>\r\n", incr);
+        }
+
+        [OneTimeSetUp]
+        public void SetupScale() {
+            Mock = new CommandMockScale(12345, ScaleHandler);
+            Scale = new("1", "IT3000A", "tcp://127.0.0.1:12345");
+        }
+
+        [OneTimeTearDown]
+        public void TeardownScale() {
+            Mock?.Dispose();
+            Scale?.Dispose();
+        }
+
+        [SetUp]
+        public void ResetScale() {
+            Mock!.IdentNr = 0;
+            Mock!.Weight = 0;
+            Mock!.Error = null;
+        }
+
+        [Test]
+        public async Task Test_01_CurrentWeight() {
+            Mock!.Weight = 1234;
+            Assert.That(await Scale!.GetCurrentWeight(), Is.EqualTo(new WeighingResult {
+                Weight = 1234, Date = Utils.Today, Time = Utils.Time,
+            }));
+            Mock!.Weight = 1235;
+            Assert.That(await Scale!.GetCurrentWeight(), Is.EqualTo(new WeighingResult {
+                Weight = 1235, Date = Utils.Today, Time = Utils.Time,
+            }));
+            Mock!.Weight = 1236;
+            Assert.That(await Scale!.GetCurrentWeight(), Is.EqualTo(new WeighingResult {
+                Weight = 1236, Date = Utils.Today, Time = Utils.Time,
+            }));
+        }
+
+        [Test]
+        public async Task Test_02_Normal() {
+            Mock!.Weight = 1234;
+            Assert.That(await Scale!.Weigh(), Is.EqualTo(new WeighingResult {
+                Weight = 1234, WeighingId = "1",
+                FullWeighingId = $"{DateTime.Today:yyyy-MM-dd}/1",
+                Date = Utils.Today, Time = Utils.Time,
+            }));
+            Mock!.Weight = 3333;
+            Assert.That(await Scale!.Weigh(), Is.EqualTo(new WeighingResult {
+                Weight = 3333, WeighingId = "2",
+                FullWeighingId = $"{DateTime.Today:yyyy-MM-dd}/2",
+                Date = Utils.Today, Time = Utils.Time,
+            }));
+            Mock!.Weight = 4321;
+            Assert.That(await Scale!.Weigh(), Is.EqualTo(new WeighingResult {
+                Weight = 4321, WeighingId = "3",
+                FullWeighingId = $"{DateTime.Today:yyyy-MM-dd}/3",
+                Date = Utils.Today, Time = Utils.Time,
+            }));
+        }
+    }
+}
diff --git a/Tests/WeighingTests/ScaleTestWolkersdorf.cs b/Tests/WeighingTests/ScaleTestWolkersdorf.cs
new file mode 100644
index 0000000..1faa39e
--- /dev/null
+++ b/Tests/WeighingTests/ScaleTestWolkersdorf.cs
@@ -0,0 +1,6 @@
+namespace Tests.WeighingTests {
+    [TestFixture]
+    public class ScaleTestWolkersdorf {
+        // TODO
+    }
+}
diff --git a/Tests/WeighingTests/Utils.cs b/Tests/WeighingTests/Utils.cs
new file mode 100644
index 0000000..11e500f
--- /dev/null
+++ b/Tests/WeighingTests/Utils.cs
@@ -0,0 +1,6 @@
+namespace Tests.WeighingTests {
+    public static class Utils {
+        public static DateOnly Today => DateOnly.FromDateTime(DateTime.Now);
+        public static TimeOnly Time => new(DateTime.Now.Hour, DateTime.Now.Minute);
+    }
+}