diff --git a/ellipse_126x91mm.svg b/ellipse_126x91mm.svg
new file mode 100644
index 0000000..cfb1f23
--- /dev/null
+++ b/ellipse_126x91mm.svg
@@ -0,0 +1,3 @@
+<svg width="126mm" height="91mm" viewBox="0 0 126 91" version="1.1" xmlns="http://www.w3.org/2000/svg">
+  <ellipse cx="63" cy="45.5" rx="63" ry="45.5" fill="#cccccc" stroke="#222222" stroke-width="1" />
+</svg>
diff --git a/ellipse_126x91mm_a4centered.svg b/ellipse_126x91mm_a4centered.svg
new file mode 100644
index 0000000..f82dd56
--- /dev/null
+++ b/ellipse_126x91mm_a4centered.svg
@@ -0,0 +1,3 @@
+<svg width="210mm" height="297mm" viewBox="0 0 210 297" version="1.1" xmlns="http://www.w3.org/2000/svg">
+  <ellipse cx="105" cy="148.5" rx="63" ry="45.5" fill="#cccccc" stroke="#222222" stroke-width="1" />
+</svg>
diff --git a/examples/weather-demo/grafana-dashboard.json b/examples/weather-demo/grafana-dashboard.json
new file mode 100644
index 0000000..f13b1fc
--- /dev/null
+++ b/examples/weather-demo/grafana-dashboard.json
@@ -0,0 +1,79 @@
+{
+  "dashboard": {
+    "title": "Weather Metrics",
+    "uid": "weather-metrics",
+    "timezone": "browser",
+    "refresh": "1m",
+    "time": { "from": "now-6h", "to": "now" },
+    "panels": [
+      {
+        "id": 1,
+        "type": "timeseries",
+        "title": "Temperature by City (°C)",
+        "gridPos": { "x": 0, "y": 0, "w": 24, "h": 10 },
+        "datasource": { "type": "grafana-postgresql-datasource", "uid": "fission-pg" },
+        "fieldConfig": {
+          "defaults": {
+            "unit": "celsius",
+            "custom": { "lineWidth": 2, "drawStyle": "line", "showPoints": "never", "spanNulls": true }
+          }
+        },
+        "options": { "legend": { "displayMode": "table", "placement": "right" } },
+        "targets": [
+          {
+            "refId": "A",
+            "rawSql": "SELECT\n  recorded_at AS time,\n  temperature,\n  city\nFROM weather_metrics\nWHERE $__timeFilter(recorded_at)\nORDER BY recorded_at",
+            "format": "time_series"
+          }
+        ]
+      },
+      {
+        "id": 2,
+        "type": "table",
+        "title": "Current Conditions",
+        "gridPos": { "x": 0, "y": 10, "w": 24, "h": 8 },
+        "datasource": { "type": "grafana-postgresql-datasource", "uid": "fission-pg" },
+        "options": { "sortBy": [{ "displayName": "City" }] },
+        "targets": [
+          {
+            "refId": "A",
+            "rawSql": "SELECT DISTINCT ON (city)\n  city,\n  country,\n  temperature,\n  feels_like,\n  humidity,\n  wind_speed,\n  description,\n  recorded_at\nFROM weather_metrics\nORDER BY city, recorded_at DESC",
+            "format": "table"
+          }
+        ]
+      },
+      {
+        "id": 3,
+        "type": "timeseries",
+        "title": "Humidity by City (%)",
+        "gridPos": { "x": 0, "y": 18, "w": 12, "h": 8 },
+        "datasource": { "type": "grafana-postgresql-datasource", "uid": "fission-pg" },
+        "fieldConfig": { "defaults": { "unit": "percent", "min": 0, "max": 100, "custom": { "lineWidth": 2, "drawStyle": "line", "showPoints": "never", "spanNulls": true } } },
+        "targets": [
+          {
+            "refId": "A",
+            "rawSql": "SELECT\n  recorded_at AS time,\n  humidity,\n  city\nFROM weather_metrics\nWHERE $__timeFilter(recorded_at)\nORDER BY recorded_at",
+            "format": "time_series"
+          }
+        ]
+      },
+      {
+        "id": 4,
+        "type": "timeseries",
+        "title": "Wind Speed by City (m/s)",
+        "gridPos": { "x": 12, "y": 18, "w": 12, "h": 8 },
+        "datasource": { "type": "grafana-postgresql-datasource", "uid": "fission-pg" },
+        "fieldConfig": { "defaults": { "unit": "velocityms", "custom": { "lineWidth": 2, "drawStyle": "line", "showPoints": "never", "spanNulls": true } } },
+        "targets": [
+          {
+            "refId": "A",
+            "rawSql": "SELECT\n  recorded_at AS time,\n  wind_speed,\n  city\nFROM weather_metrics\nWHERE $__timeFilter(recorded_at)\nORDER BY recorded_at",
+            "format": "time_series"
+          }
+        ]
+      }
+    ],
+    "schemaVersion": 38
+  },
+  "overwrite": true
+}
diff --git a/unroll_ring.svg b/unroll_ring.svg
new file mode 100644
index 0000000..38eb088
--- /dev/null
+++ b/unroll_ring.svg
@@ -0,0 +1,14 @@
+<svg width="310mm" height="110mm" viewBox="0 0 310 110" xmlns="http://www.w3.org/2000/svg">
+  <!-- ОДНО наклонное кольцо: верхняя кромка синусоида y=40+40*sin(πx/L) -->
+  <polyline fill="none" stroke="#1976d2" stroke-width="2" points="
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+  <!-- Нижняя кромка синусоида y=60+40*sin(πx/L) -->
+  <polyline fill="none" stroke="#d32f2f" stroke-width="2" points="
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+" />
+  <!-- Заливка между кромками -->
+  <polygon fill="#e0f7fa" fill-opacity="0.6" stroke="none" points="
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+" />
+</svg>
diff --git a/unroll_ring_correct.svg b/unroll_ring_correct.svg
new file mode 100644
index 0000000..5ef5379
--- /dev/null
+++ b/unroll_ring_correct.svg
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="301.6mm" height="120mm" viewBox="0 0 301.6 120" xmlns="http://www.w3.org/2000/svg">
+  <polyline fill="none" stroke="#1976d2" stroke-width="1.5" points="0.0,50.00 3.0,52.51 6.0,55.01 9.0,57.50 12.1,59.95 15.1,62.36 18.1,64.72 21.1,67.03 24.1,69.27 27.1,71.43 30.2,73.51 33.2,75.50 36.2,77.38 39.2,79.16 42.2,80.82 45.2,82.36 48.3,83.77 51.3,85.05 54.3,86.19 57.3,87.19 60.3,88.04 63.3,88.74 66.4,89.29 69.4,89.68 72.4,89.92 75.4,90.00 78.4,89.92 81.4,89.68 84.4,89.29 87.5,88.74 90.5,88.04 93.5,87.19 96.5,86.19 99.5,85.05 102.5,83.77 105.6,82.36 108.6,80.82 111.6,79.16 114.6,77.38 117.6,75.50 120.6,73.51 123.7,71.43 126.7,69.27 129.7,67.03 132.7,64.72 135.7,62.36 138.7,59.95 141.7,57.50 144.8,55.01 147.8,52.51 150.8,50.00 153.8,47.49 156.8,44.99 159.8,42.50 162.9,40.05 165.9,37.64 168.9,35.28 171.9,32.97 174.9,30.73 177.9,28.57 181.0,26.49 184.0,24.50 187.0,22.62 190.0,20.84 193.0,19.18 196.0,17.64 199.1,16.23 202.1,14.95 205.1,13.81 208.1,12.81 211.1,11.96 214.1,11.26 217.1,10.71 220.2,10.32 223.2,10.08 226.2,10.00 229.2,10.08 232.2,10.32 235.2,10.71 238.3,11.26 241.3,11.96 244.3,12.81 247.3,13.81 250.3,14.95 253.3,16.23 256.4,17.64 259.4,19.18 262.4,20.84 265.4,22.62 268.4,24.50 271.4,26.49 274.4,28.57 277.5,30.73 280.5,32.97 283.5,35.28 286.5,37.64 289.5,40.05 292.5,42.50 295.6,44.99 298.6,47.49 301.6,50.00" />
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\ No newline at end of file
diff --git a/unroll_ring_params.txt b/unroll_ring_params.txt
new file mode 100644
index 0000000..75e7b9d
--- /dev/null
+++ b/unroll_ring_params.txt
@@ -0,0 +1,3 @@
+Диаметр цилиндра: 96 мм
+Вертикальная проекция большой оси эллипса: 80 мм
+Расстояние между срезами по вертикали: 20 мм
diff --git a/unroll_ring_part1.svg b/unroll_ring_part1.svg
new file mode 100644
index 0000000..6d2934c
--- /dev/null
+++ b/unroll_ring_part1.svg
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="150.8mm" height="120mm" viewBox="0 0 150.8 120" xmlns="http://www.w3.org/2000/svg">
+  <!-- Часть 1 (левая) -->
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diff --git a/unroll_ring_part2.svg b/unroll_ring_part2.svg
new file mode 100644
index 0000000..9b68f51
--- /dev/null
+++ b/unroll_ring_part2.svg
@@ -0,0 +1,9 @@
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diff --git a/unroll_ring_sine.svg b/unroll_ring_sine.svg
new file mode 100644
index 0000000..940fad4
--- /dev/null
+++ b/unroll_ring_sine.svg
@@ -0,0 +1,13 @@
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