Etch plan — L-SMPL-H17020-0460
Print, take to the marker. Back face unless the customer needs both faces clean.
| Datum | corner A1, marked with a filled circle |
| Lot code | L-SMPL-H17020-0460 |
| Grid | 50 mm pitch, 60 columns (A…) × 30 rows (1…) |
| Face | back |
| Marker | dot-peen DP-1, depth < 0.1 mm |
| Plates | 4 — etch each; suffix -2, -3 … on the lot code for the 2nd plate onward |
| After etching | photograph both faces; attach to the lot record |