diff --git a/ui/src/components/OperationPanel.jsx b/ui/src/components/OperationPanel.jsx
index b36b337..70f0478 100644
--- a/ui/src/components/OperationPanel.jsx
+++ b/ui/src/components/OperationPanel.jsx
@@ -189,7 +189,10 @@ const FIELDS = [
 ]
 
 // given the active edit for a measure, what do the three rows read?
-function derive(current, edit) {
+// dp is the measure's own precision, so the editable rows read the same way as
+// the lines above them -- whole dollars against whole dollars, five places
+// against five. The percentage is its own scale and stays at one.
+function derive(current, edit, dp = 2) {
   const blank = { new: '', change: '', pct: '' }
   if (!edit || edit.raw === '' || edit.raw == null) return blank
   const n = parseFloat(edit.raw)
@@ -203,8 +206,8 @@ function derive(current, edit) {
   const change = next - current
   const pct    = current === 0 ? null : (change / Math.abs(current)) * 100
   const out = {
-    new:    fmtNum(next),
-    change: fmtNum(change),
+    new:    fmtNum(next,   dp),
+    change: fmtNum(change, dp),
     pct:    pct == null ? '—' : fmtNum(pct, 1),
   }
   out[edit.field] = edit.raw        // keep what you typed exactly as typed
@@ -285,13 +288,16 @@ function ScaleLedger({ currentTotals, scaleInputs, setScaleInputs, scalePlug, se
 
   // measure columns, in ledger order
   const measures = [
-    valueCol && { key: 'value', label: valueCol, current: total.value,  dp: 2 },
-    unitsCol && { key: 'units', label: unitsCol, current: total.units,  dp: 2 },
-    (valueCol && unitsCol) && { key: 'price', label: 'price', current: curPrice, dp: 4, hint: 'value / units' },
+    // Whole units for the measures -- the figures run to eight digits, where two
+    // decimals are noise. Price is the opposite: it sits around 0.27, so it needs
+    // the places to show a move at all.
+    valueCol && { key: 'value', label: valueCol, current: total.value,  dp: 0 },
+    unitsCol && { key: 'units', label: unitsCol, current: total.units,  dp: 0 },
+    (valueCol && unitsCol) && { key: 'price', label: 'price', current: curPrice, dp: 5, hint: 'value / units' },
   ].filter(Boolean)
 
   const derived = Object.fromEntries(
-    measures.map(m => [m.key, derive(basisOf(m.key) ?? 0, scaleInputs[m.key])])
+    measures.map(m => [m.key, derive(basisOf(m.key) ?? 0, scaleInputs[m.key], m.dp)])
   )
 
   // an edit is dollars-only when value carries a number and neither units nor