| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. FRAME OPENING MEASUREMENT | |||
| A1 | Opening width measured at top, middle, and bottom; three readings taken and averaged Acceptance: Measurements within ±2 mm of design; average recorded; no excessive variation between top/middle/bottom (≤3 mm range) | Cl. 4.1 — Width verification | |
| A2 | Opening height measured at left, center, and right; three readings taken and averaged Acceptance: Measurements within ±2 mm of design; average recorded; uniform height across width | Cl. 4.2 — Height verification | |
| A3 | Opening diagonal measurements taken (corner to opposite corner); difference ≤3 mm for squareness Acceptance: Diagonal 1 and Diagonal 2 measured; difference calculated; acceptance: ≤3 mm for typical openings | Cl. 4.3 — Squareness verification | |
| B. ACCEPTANCE SUMMARY | |||
| B1 | Overall dimensional compliance: opening dimensions within tolerance and square Acceptance: PASS if all measurements within ±2 mm; FAIL if deviations exceed tolerance or squareness > 3 mm | Cl. 5.1 — Final determination | |