diff --git a/electron/src/control/MinMaxValue.tsx b/electron/src/control/MinMaxValue.tsx
new file mode 100644
index 00000000..bb543945
--- /dev/null
+++ b/electron/src/control/MinMaxValue.tsx
@@ -0,0 +1,173 @@
+import { Icon, IconName } from "@/components/Icon";
+import React, { useState, useMemo } from "react";
+import {
+  getUnitIcon,
+  renderValueToReactNode,
+  renderUnitSymbol,
+  Unit,
+} from "./units";
+import { Label } from "./Label";
+import { TimeSeries, TimeSeriesValue } from "@/lib/timeseries";
+
+type TimeframeOption = {
+  label: string;
+  value: number; // in milliseconds
+};
+
+export const TIMEFRAME_OPTIONS: TimeframeOption[] = [
+  { label: "1 min", value: 1 * 60 * 1000 },
+  { label: "5 min", value: 5 * 60 * 1000 },
+  { label: "10 min", value: 10 * 60 * 1000 },
+  { label: "30 min", value: 30 * 60 * 1000 },
+  { label: "1 hour", value: 60 * 60 * 1000 },
+];
+
+type Props = {
+  label: string;
+  unit?: Unit;
+  timeseries: TimeSeries;
+  icon?: IconName;
+  renderValue?: (value: number) => string;
+  defaultTimeframe?: number; // in milliseconds, defaults to 5 minutes
+  /** Optional externally-controlled timeframe (ms). When provided, component becomes controlled. */
+  timeframe?: number;
+  /** Optional callback when timeframe is changed via this component's selector */
+  onTimeframeChange?: (t: number) => void;
+  /** When true, hide the built-in timeframe selector (useful when sharing a selector outside) */
+  hideSelector?: boolean;
+};
+
+export function MinMaxValue({
+  unit,
+  timeseries,
+  icon,
+  label,
+  renderValue,
+  defaultTimeframe = 5 * 60 * 1000, // 5 minutes default
+  timeframe,
+  onTimeframeChange,
+  hideSelector = false,
+}: Props) {
+  const [internalTimeframe, setInternalTimeframe] = useState(defaultTimeframe);
+  const selectedTimeframe = timeframe ?? internalTimeframe;
+
+  // Calculate min/max from the timeseries using the selected timeframe
+  const { min, max, hasData } = useMemo(() => {
+    // Use short series for timeframes <= 5 seconds, otherwise use long series
+    // Short series typically has ~5 second retention with high resolution
+    // Long series typically has ~1 hour retention with lower resolution
+    const series =
+      selectedTimeframe <= 5000 ? timeseries.short : timeseries.long;
+
+    // Manually calculate min/max to exclude zero values (which might be invalid readings)
+    const cutoffTime = series.lastTimestamp - selectedTimeframe;
+    let min = Number.POSITIVE_INFINITY;
+    let max = Number.NEGATIVE_INFINITY;
+    let hasValidData = false;
+    let dataCount = 0;
+
+    const { values: raw, index, size, validCount } = series;
+
+    const startIdx = validCount < size ? 0 : index;
+
+    for (let i = 0; i < validCount; i++) {
+      const idx = (startIdx + i) % size;
+      const val = raw[idx];
+
+      if (
+        val &&
+        val.timestamp > 0 &&
+        val.timestamp >= cutoffTime &&
+        val.value > 0
+      ) {
+        hasValidData = true;
+        dataCount++;
+        if (val.value < min) min = val.value;
+        if (val.value > max) max = val.value;
+      }
+    }
+
+    if (!hasValidData) {
+      return { min: 0, max: 0, hasData: false };
+    }
+
+    return { min, max, hasData: true };
+  }, [
+    timeseries.short,
+    timeseries.long,
+    timeseries.current,
+    selectedTimeframe,
+  ]);
+
+  return (
+    <div className="flex w-full flex-col gap-3">
+      <Label label={label}>
+        <div className="flex flex-row items-center gap-6">
+          {/* Min Value */}
+          <div className="flex flex-row items-center gap-2">
+            <Icon
+              name={icon ?? (unit ? getUnitIcon(unit) : undefined)}
+              className="size-5 text-blue-500"
+            />
+            <div className="flex flex-col">
+              <span className="text-xs text-gray-500">Min</span>
+              <div className="flex flex-row items-center gap-1">
+                <span className="font-mono text-xl font-bold">
+                  {hasData
+                    ? renderValueToReactNode(min, unit, renderValue)
+                    : "-"}
+                </span>
+                {hasData && (
+                  <span className="text-sm">{renderUnitSymbol(unit)}</span>
+                )}
+              </div>
+            </div>
+          </div>
+
+          {/* Max Value */}
+          <div className="flex flex-row items-center gap-2">
+            <Icon
+              name={icon ?? (unit ? getUnitIcon(unit) : undefined)}
+              className="size-5 text-red-500"
+            />
+            <div className="flex flex-col">
+              <span className="text-xs text-gray-500">Max</span>
+              <div className="flex flex-row items-center gap-1">
+                <span className="font-mono text-xl font-bold">
+                  {hasData
+                    ? renderValueToReactNode(max, unit, renderValue)
+                    : "-"}
+                </span>
+                {hasData && (
+                  <span className="text-sm">{renderUnitSymbol(unit)}</span>
+                )}
+              </div>
+            </div>
+          </div>
+        </div>
+      </Label>
+
+      {/* Timeframe Selector (hidden when sharing selector externally) */}
+      {!hideSelector && (
+        <div className="flex flex-row flex-wrap gap-2">
+          {TIMEFRAME_OPTIONS.map((option) => (
+            <button
+              key={option.value}
+              onClick={() => {
+                if (onTimeframeChange) onTimeframeChange(option.value);
+                else setInternalTimeframe(option.value);
+              }}
+              className={`rounded-md px-3 py-1 text-sm transition-colors ${
+                selectedTimeframe === option.value
+                  ? "bg-blue-500 text-white"
+                  : "bg-gray-200 text-gray-700 hover:bg-gray-300"
+              }`}
+            >
+              {option.label}
+            </button>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
diff --git a/electron/src/machines/laser/laser1/Laser1ControlPage.tsx b/electron/src/machines/laser/laser1/Laser1ControlPage.tsx
index f9a8a319..e38e08a4 100644
--- a/electron/src/machines/laser/laser1/Laser1ControlPage.tsx
+++ b/electron/src/machines/laser/laser1/Laser1ControlPage.tsx
@@ -3,6 +3,7 @@ import { Page } from "@/components/Page";
 import React from "react";
 import { ControlGrid } from "@/control/ControlGrid";
 import { TimeSeriesValueNumeric } from "@/control/TimeSeriesValue";
+import { MinMaxValue, TIMEFRAME_OPTIONS } from "@/control/MinMaxValue";
 
 import { EditValue } from "@/control/EditValue";
 import { Label } from "@/control/Label";
@@ -28,6 +29,12 @@ export function Laser1ControlPage() {
   const targetDiameter = state?.laser_state?.target_diameter ?? 0;
   const lowerTolerance = state?.laser_state?.lower_tolerance ?? 0;
   const higherTolerance = state?.laser_state?.higher_tolerance ?? 0;
+
+  // Detect if this is a 2-axis laser
+  const isTwoAxis = !!x_diameter?.current || !!y_diameter?.current;
+  // Shared timeframe state (default 5 minutes)
+  const [timeframe, setTimeframe] = React.useState<number>(5 * 60 * 1000);
+
   return (
     <Page>
       <ControlGrid columns={2}>
@@ -77,6 +84,57 @@ export function Laser1ControlPage() {
               />
             </div>
           )}
+          <div className="mt-4 border-t pt-4">
+            {isTwoAxis ? (
+              // For 2-axis lasers: show diameter and roundness min/max side by side
+              <div className="grid grid-cols-2 gap-4">
+                <MinMaxValue
+                  label="Diameter Range"
+                  unit="mm"
+                  timeseries={diameter}
+                  renderValue={(value) => value.toFixed(3)}
+                  timeframe={timeframe}
+                  hideSelector
+                />
+                {roundness?.current && (
+                  <MinMaxValue
+                    label="Roundness Range"
+                    timeseries={roundness}
+                    renderValue={(value) => value.toFixed(3)}
+                    timeframe={timeframe}
+                    hideSelector
+                  />
+                )}
+              </div>
+            ) : (
+              // For single-axis lasers: show only diameter min/max with shared selector
+              <MinMaxValue
+                label="Diameter Range"
+                unit="mm"
+                timeseries={diameter}
+                renderValue={(value) => value.toFixed(3)}
+                timeframe={timeframe}
+                hideSelector
+              />
+            )}
+
+            {/* Shared timeframe selector for diameter/roundness */}
+            <div className="mt-3 flex flex-row flex-wrap gap-2">
+              {TIMEFRAME_OPTIONS.map((option) => (
+                <button
+                  key={option.value}
+                  onClick={() => setTimeframe(option.value)}
+                  className={`rounded-md px-3 py-1 text-sm transition-colors ${
+                    timeframe === option.value
+                      ? "bg-blue-500 text-white"
+                      : "bg-gray-200 text-gray-700 hover:bg-gray-300"
+                  }`}
+                >
+                  {option.label}
+                </button>
+              ))}
+            </div>
+          </div>
         </ControlCard>
         <ControlCard title="Settings">
           <Label label="Set Target Diameter">