Start with a reference, not a size label
A length alone cannot identify a replacement. Keep one intact reference pad and identify the frame it came from. Photograph the front, side and mounting face next to a millimeter scale. Label left and right samples when the outline is asymmetric.
Measurement worksheet
| Record | What to send |
|---|---|
| Outline | Maximum length and width, in mm; show measurement direction |
| Thickness | Where it was measured; soft pads can deform under pressure |
| Insert | Close-up of the connector and the receiving pad arm |
| Shape | Drawing or photograph rather than an ambiguous shape name |
| Quantity | Pieces or pairs, with pieces per package |
Avoid squeezing a soft pad to produce a more precise-looking number. Record the tool used and any uncertainty. Do not infer an insert dimension from the outer pad length.
Turn measurements into a sample decision
Ask the supplier to return a dimensioned drawing marked against your reference. Where a dimension is uncertain, request a small sample rather than approving a bulk substitution. Compare the mounting connection first, then outline and finish. A pad that looks similar in a photograph may still have a different connector.
Keep the accepted supplier part number, drawing revision and sample label together. This makes a reorder more useful than a message saying “the same small pads again.” This worksheet is an editorial purchasing aid, not a universal nose pad size standard.