Technical Notes
How to identify an industrial instrument from its nameplate
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Most sourcing delays start with a blurry photo and a guess. If you can read the nameplate — or say clearly that you cannot — a specialist desk can work the enquiry.
This note is a practical method for identifying industrial instruments (calibrators, gauges, portable measurement and related kit) before you ask someone to locate a replacement or spare.
What to photograph and transcribe
Take one sharp photo square-on to the plate, and a second of the whole instrument for context. Then write down:
| On the plate | Capture it as |
|---|---|
| Manufacturer / brand | Exact spelling |
| Model / type | As printed — including spaces and suffixes |
| Part number / order code / P/N | Often more useful than the marketing model name |
| Serial number | For configuration history — not usually enough alone to buy |
| Range / input / output | e.g. pressure range, electrical ranges |
| Supply voltage / medium ratings | Safety and compatibility |
| Options / firmware / version marks | Small suffixes change the unit |
| Barcode / 2D code | Photograph; do not assume it replaces the PN |
If the plate has both a model and a part number, send both. Part number is valuable when present — it is not mandatory if the plate is incomplete; say what is missing.
Model vs part number vs serial
- Model — family name people recognise in conversation.
- Part number — what sourcing and OEM systems usually need.
- Serial — identifies that unit; rarely enough to buy another.
A useful enquiry looks like: Manufacturer X · Model Y · P/N Z · Qty 1 · need equivalent condition class · needed by [date].
When the plate is damaged, painted over, or missing
Do what you can:
- Check cases, lids, carry pouches and calibration stickers for a second label.
- Check the display boot screen or info menu on electronic instruments — note firmware only as supporting detail.
- Check purchase orders, calibration certificates and asset registers for the PN.
- Send a clear photo anyway, plus the application the instrument performed.
Say “nameplate unreadable” in the enquiry. That is better than inventing a model string.
For a structured list of what else to include, see How to write an industrial equipment RFQ that gets a usable reply.
How to send it to Obsidian Dynamics
If you have manufacturer + model or PN — especially if the unit is discontinued or awkward — use Instrument Exchange:
Attach a nameplate image if your form allows (PDF or image). Include quantity, timing and acceptable condition.
If you mainly know the job — wall thickness under coating, portable hardness on a stated material, a pressure calibrator in a stated range — send a requirement and describe the application.
We source and locate. We do not imply stock. Brand examples on our Instrument Exchange page are not an authorised-distributor listing.
Related reading
- How to source an obsolete or hard-to-find industrial part
- How to write an industrial equipment RFQ that gets a usable reply
- Instrument Exchange
- Home
Plate read?
Send manufacturer and model or part number — with a photo if you have one.