diff --git a/M02_MasterTemplete/M02_MasterTemplete_Structure.css b/M02_MasterTemplete/M02_MasterTemplete_Structure.css
index 35b74d67..92a996e0 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Structure.css
+++ b/M02_MasterTemplete/M02_MasterTemplete_Structure.css
@@ -78,3 +78,37 @@
   padding: var(--spacing-16);
   color: var(--color-text-muted);
 }
+
+/* 조회 후 선택 창 — 찾기 칸 + 목록(번호 · 이름) */
+.m02-pick__list {
+  display: flex;
+  flex-direction: column;
+  max-height: 55vh;
+  overflow: auto;
+  margin: var(--spacing-8) 0;
+}
+
+.m02-pick__item {
+  display: flex;
+  gap: var(--spacing-12);
+  padding: var(--spacing-8);
+  border: none;
+  border-radius: var(--radius-sm, 4px);
+  background: none;
+  color: inherit;
+  font: inherit;
+  text-align: left;
+  cursor: pointer;
+}
+
+.m02-pick__item:hover,
+.m02-pick__item:focus-visible {
+  background: var(--color-surface-sunken);
+}
+
+.m02-pick__key {
+  flex: none;
+  min-width: 6rem;
+  color: var(--color-text-muted);
+  font-variant-numeric: tabular-nums;
+}
\ No newline at end of file
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Structure.ts b/M02_MasterTemplete/M02_MasterTemplete_Structure.ts
index 84b123e5..ad0a7ce5 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Structure.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Structure.ts
@@ -9,13 +9,25 @@
  * 구조물 도면은 집계표 열마다 하나(`resources/master_template/structure/<열 id>.json`) ·
  * 서버가 열마다 미리 만들어 둠(도번 자동 · 새 열도 집계표 저장 때 서버가 같이 만듦 — `M02_MasterTemplete_Store.py`).
  * 이 칸은 표 부품 host 밖 형제 자리에 붙음 — 집계표는 그대로 두고 여기만 열마다 다시 그림.
+ * 집계표 일위대가 · 도면 · 산출근거 줄의 조회 후 선택(`pick`)도 여기 — 일위대가 = M01 일위대가 목록에서 고름 ·
+ * 도면 · 산출근거 = 다른 열 것을 골라 내용만 복사해 가져옴(번호 · 열은 그대로 · 서버가 복사).
  * 글자는 이 파일에 둠(도면 부품 `M02_MasterTemplete_Drawing.ts` 와 같은 방식).
  * ========================================================================== */
 
-import { createButton, el, showToast } from "@ui/ui_template_elements";
-import { attachCollapsible } from "@ui/ui_template_collapsible";
-import type { SpreadsheetHandle, Workbook } from "../A00_Common/spreadsheet/spreadsheet";
 import {
+  createButton,
+  createInputField,
+  el,
+  showConfirmDialog,
+  showToast,
+} from "@ui/ui_template_elements";
+import { attachCollapsible } from "@ui/ui_template_collapsible";
+import { openModal } from "@ui/ui_template_modal";
+import type { SpreadsheetHandle, Workbook } from "../A00_Common/spreadsheet/spreadsheet";
+import { type ComboSummary, fetchCombos } from "../M01_MasterData/M01_MasterData_UI_Combo_Api";
+import {
+  copyBasis,
+  copyStructure,
   fetchStructureNumbers,
   readTemplate,
   type StructureDoc,
@@ -41,6 +53,20 @@ const TEXT = {
   noBasis: "산출근거 없음",
   noSheet: "스프레드시트를 못 띄움 — {value}",
   readFailed: "구조물 도면을 못 읽음 — {value}",
+  close: "닫기",
+  find: "찾기",
+  clear: "비움",
+  none: "고를 것이 없음",
+  pickPrice: "일위대가 고르기",
+  pickDrawing: "도면 복사해 가져오기",
+  pickBasis: "산출근거 복사해 가져오기",
+  combosFailed: "일위대가 목록을 못 받음 — {value}",
+  saveFirst: "새 열은 집계표를 먼저 저장해야 번호가 생김",
+  overwrite: "{from} 의 {what} 내용을 {to} 에 덮어씀 — 번호 · 열은 그대로",
+  drawing: "도면",
+  basisWord: "산출근거",
+  copied: "복사해 가져옴",
+  copyFailed: "복사 실패 — {value}",
 };
 
 const why = (error: unknown): string => (error instanceof Error ? error.message : "");
@@ -48,6 +74,93 @@ const fill = (text: string, value: string): string => text.replace("{value}", va
 /** 스프레드시트는 산출근거 카드를 열 때만 받음 */
 const loadSpreadsheet = () => import("../A00_Common/spreadsheet/spreadsheet");
 
+/** `{열 id: {도번, 표번}}` — 집계표 도면 · 산출근거 줄(없는 열은 키 없음 = 「없음」) */
+export type ColumnNumbers = Record<string, { 도번?: string; 표번?: string }>;
+
+/** 일위대가 목록 — 처음 한 번만 받음(못 받으면 다음에 다시) */
+let combos: Promise<ComboSummary[]> | null = null;
+const loadCombos = (): Promise<ComboSummary[]> =>
+  (combos ??= fetchCombos().catch((error: unknown) => {
+    combos = null;
+    throw error;
+  }));
+
+interface Choice {
+  value: string;
+  key: string;
+  label: string;
+}
+
+/** 찾기 칸 + 목록 창 — 고른 값(「비움」 = 빈 글) · 그냥 닫으면 null */
+function choose(title: string, items: Choice[], clearable: boolean): Promise<string | null> {
+  return new Promise((resolve) => {
+    let done = false;
+    const finish = (value: string | null): void => {
+      if (!done) resolve(value);
+      done = true;
+    };
+    openModal({
+      title,
+      closeLabel: TEXT.close,
+      dialogClass: "m02-modal m02-pick",
+      mount: (body, close) => {
+        const search = createInputField({ placeholder: TEXT.find, type: "search" });
+        const list = el("div", { className: "m02-pick__list" });
+        const paint = (): void => {
+          const words = search.input.value.trim().toLowerCase().split(/\s+/).filter(Boolean);
+          const hits = items.filter((it) =>
+            words.every((w) => `${it.key} ${it.label}`.toLowerCase().includes(w)),
+          );
+          list.replaceChildren(
+            ...(hits.length
+              ? hits.map((it) =>
+                  el("button", {
+                    className: "m02-pick__item",
+                    attrs: { type: "button", "data-value": it.value },
+                    children: [el("span", { className: "m02-pick__key", text: it.key }), it.label],
+                  }),
+                )
+              : [el("p", { className: "m02-struct__empty", text: TEXT.none })]),
+          );
+        };
+        list.addEventListener("click", (event) => {
+          const item = (event.target as HTMLElement).closest<HTMLElement>("[data-value]");
+          if (!item) return;
+          finish(item.dataset.value!);
+          close();
+        });
+        search.input.addEventListener("input", paint);
+        search.input.addEventListener("keydown", (event) => {
+          if (event.key !== "Enter") return;
+          list.querySelector<HTMLElement>("[data-value]")?.click(); // 첫 줄
+        });
+        const foot = clearable
+          ? [
+              createButton({
+                label: TEXT.clear,
+                variant: "ghost",
+                onClick: () => {
+                  finish("");
+                  close();
+                },
+              }),
+            ]
+          : [];
+        body.append(search.root, list, ...foot);
+        paint();
+        search.input.focus();
+      },
+    });
+    // 닫기 단추 · Esc · 바깥 누르기 — 창이 빠지면 null
+    const watch = new MutationObserver(() => {
+      if (document.querySelector(".m02-pick")) return;
+      watch.disconnect();
+      finish(null);
+    });
+    watch.observe(document.body, { childList: true });
+  });
+}
+
 /** 집계표 열 — 머리 글만 씀 */
 export interface StructureColumn {
   id: string;
@@ -70,17 +183,21 @@ export interface StructurePanelOptions {
 
 export interface StructurePanelHandle {
   root: HTMLElement;
-  /** `{열 id: 도번}` — 집계표 `drawingLabel` 이 씀 */
-  numbers: () => Record<string, string>;
-  /** 도번 목록 다시 받기 */
+  /** `{열 id: {도번, 표번}}` — 집계표 `drawingLabel` · `basisLabel` 이 씀 */
+  numbers: () => ColumnNumbers;
+  /** 도번 · 표번 목록 다시 받기 */
   reload: () => Promise<void>;
   /** 고른 열이 바뀜 — 같은 열이면 아무것도 안 함(CAD 를 다시 안 띄움) */
   show: (colId: string | null, columns: StructureColumn[]) => void;
+  /** 집계표 조회 후 선택(`onPick`) — 일위대가 = 고른 키(「비움」 = 빈 글 · 닫으면 null) ·
+   * 도면 · 산출근거 = 다른 열 것을 복사해 가져옴(돌려주는 글 없음) */
+  pick: (row: string, colId: string | null, columns: StructureColumn[]) => Promise<string | null>;
   destroy: () => void;
 }
 
 export function createStructurePanel(opts: StructurePanelOptions): StructurePanelHandle {
-  let numbers: Record<string, string> = {};
+  let numbers: ColumnNumbers = {};
+  let shown: StructureColumn | null = null;
   let column: string | null = null;
   let columnLabel = "";
   let doc: StructureDoc | null = null;
@@ -162,9 +279,9 @@ export function createStructurePanel(opts: StructurePanelOptions): StructurePane
   /** 미리보기 · 산출근거 — 문서가 없으면 없음 글(서버가 열마다 미리 만들어 둬 보통은 없음) */
   const paintBody = (mine: number): void => {
     drop();
-    number.textContent = doc?.도번 || numbers[column ?? ""] || TEXT.noNumber;
+    number.textContent = doc?.도번 || numbers[column ?? ""]?.도번 || TEXT.noNumber;
     edit.hidden = !opts.isAdmin;
-    basisNo.textContent = basisNumber || TEXT.noTableNumber;
+    basisNo.textContent = basisNumber || numbers[column ?? ""]?.표번 || TEXT.noTableNumber;
     editBasis.hidden = !opts.isAdmin;
     basisHost.replaceChildren();
     void paintBasis(mine);
@@ -186,6 +303,7 @@ export function createStructurePanel(opts: StructurePanelOptions): StructurePane
   async function load(col: StructureColumn | null): Promise<void> {
     const mine = ++seq;
     drop();
+    shown = col;
     if (!col) {
       root.hidden = true;
       column = null;
@@ -196,7 +314,7 @@ export function createStructurePanel(opts: StructurePanelOptions): StructurePane
     column = col.id;
     columnLabel = columnHead(col);
     columnName.textContent = columnLabel;
-    number.textContent = numbers[col.id] ?? TEXT.noNumber;
+    number.textContent = numbers[col.id]?.도번 ?? TEXT.noNumber;
     doc = null;
     basisDoc = null;
     basisNumber = "";
@@ -222,6 +340,69 @@ export function createStructurePanel(opts: StructurePanelOptions): StructurePane
     void load(colId ? (columns.find((c) => c.id === colId) ?? null) : null);
   };
 
+  const pickPrice = async (colId: string, columns: StructureColumn[]): Promise<string | null> => {
+    let list: ComboSummary[];
+    try {
+      list = await loadCombos();
+    } catch (error) {
+      showToast(fill(TEXT.combosFailed, why(error)), "error");
+      return null;
+    }
+    const col = columns.find((c) => c.id === colId);
+    const items = list.map((c) => ({
+      value: c.키,
+      key: c.키,
+      label: [c.이름, c.단위 && `(${c.단위})`, c.구분].filter(Boolean).join(" "),
+    }));
+    return choose(col ? `${TEXT.pickPrice} — ${columnHead(col)}` : TEXT.pickPrice, items, true);
+  };
+
+  /** 다른 열의 도면 · 산출근거를 골라 내용만 복사 — 덮어쓰기 확인 · 보고 있던 열이면 다시 읽음 */
+  const pickCopy = async (
+    kind: "structure" | "basis",
+    colId: string,
+    columns: StructureColumn[],
+  ): Promise<void> => {
+    const field = kind === "structure" ? "도번" : "표번";
+    const to = columns.find((c) => c.id === colId);
+    const toNo = numbers[colId]?.[field];
+    if (!to || !toNo) return void showToast(TEXT.saveFirst, "error");
+    const items = columns
+      .filter((c) => c.id !== colId && numbers[c.id]?.[field])
+      .map((c) => ({ value: c.id, key: numbers[c.id][field]!, label: columnHead(c) }));
+    const from = await choose(
+      `${kind === "structure" ? TEXT.pickDrawing : TEXT.pickBasis} — ${toNo} ${columnHead(to)}`,
+      items,
+      false,
+    );
+    const src = columns.find((c) => c.id === from);
+    if (!from || !src) return;
+    const ask = TEXT.overwrite
+      .replace("{from}", `${numbers[from][field]} ${columnHead(src)}`)
+      .replace("{what}", kind === "structure" ? TEXT.drawing : TEXT.basisWord)
+      .replace("{to}", `${toNo} ${columnHead(to)}`);
+    if (!(await showConfirmDialog(ask))) return;
+    try {
+      await (kind === "structure" ? copyStructure : copyBasis)(colId, from);
+      showToast(TEXT.copied, "success");
+      if (column === colId) void load(shown);
+    } catch (error) {
+      showToast(fill(TEXT.copyFailed, why(error)), "error");
+    }
+  };
+
+  const pick = async (
+    row: string,
+    colId: string | null,
+    columns: StructureColumn[],
+  ): Promise<string | null> => {
+    if (!opts.isAdmin || !colId) return null;
+    if (row === "s:price") return pickPrice(colId, columns);
+    if (row === "s:drawing" || row === "s:basis")
+      await pickCopy(row === "s:drawing" ? "structure" : "basis", colId, columns);
+    return null;
+  };
+
   edit.addEventListener("click", async () => {
     const at = column;
     if (!at) return;
@@ -243,6 +424,7 @@ export function createStructurePanel(opts: StructurePanelOptions): StructurePane
       numbers = await fetchStructureNumbers().catch(() => ({}));
     },
     show,
+    pick,
     destroy: () => {
       seq += 1;
       drop();
diff --git a/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts b/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts
index 53f66bbd..f226ae1c 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts
@@ -161,18 +161,26 @@ export function createMain(isAdmin: boolean, onSaved?: () => void): MainHandle {
         "createSheet",
       );
       if (!create) return empty(L("M02_NoSheet"));
-      // 구조물집계표(시스템 층)만 — 도면 줄에 도번 · 칸을 고르면 아래 컨테이너
+      // 구조물집계표(시스템 층)만 — 도면 · 산출근거 줄에 도번 · 표번 · 칸을 고르면 아래 컨테이너 ·
+      // 고칠 수 있으면 일위대가 · 도면 · 산출근거 칸은 조회 후 선택
       const struct = at.layer === "system" && at.name === STRUCTURE_TABLE ? buildPanel() : null;
       if (struct) await struct.reload();
       panel = struct;
+      const columns = (): StructureColumn[] => sheet?.getDoc().열 ?? [];
       editor = create(host, doc, {
         mode: at.layer === "project" ? "project" : "master",
         onChange: () => (dirty = !readOnly),
         ...(struct
           ? {
-              drawingLabel: (colId: string) => struct.numbers()[colId] ?? "",
-              onSelect: (s: { colId: string | null }) =>
-                struct.show(s.colId, sheet?.getDoc().열 ?? []),
+              drawingLabel: (colId: string) => struct.numbers()[colId]?.도번 ?? "",
+              basisLabel: (colId: string) => struct.numbers()[colId]?.표번 ?? "",
+              onSelect: (s: { colId: string | null }) => struct.show(s.colId, columns()),
+              ...(readOnly
+                ? {}
+                : {
+                    onPick: (s: { row: string; colId: string | null }) =>
+                      struct.pick(s.row, s.colId, columns()),
+                  }),
             }
           : {}),
       });