Gemsmakers · Lighting object reference desk

Antique Lamp Shade Fitter Measurement Matcher

Compare a lamp's recorded shade-support measurements with a candidate shade before arranging an in-person check. Keep fitter style, measurement points, dimensions and observations together; the match is a shortlist for a specialist to verify, not a guarantee of safe fit.

Fitter style and sizeCandidate comparisonPrintable measurements

Record the lamp support

Identify the actual point where the shade is supported. This tool deals with a shade-to-lamp fitter and does not evaluate burner, chimney or electrical compatibility.

Lamp / inventory referenceMeasurement unitObserved fitter styleFitter opening diameterSupport ring / gallery outside diameterShade drop / vertical clearance availableMeasurement method and observed features

Candidate shade measurements

Enter the candidate's fitter interface dimensions from a seller or direct measurement. Do not rely on a nominal shade size alone.

Candidate / listing referenceFitter style claimedCandidate fitter opening diameterCandidate fitter ring outside diameterCandidate overall shade heightFit tolerance for screeningComparison allowance only, not an accepted fit specification.

Comparison result

Enter like-for-like fitter measurements and compare. A numeric match does not confirm shape, support or safe installation.

Copy-ready record

No comparison prepared.

Measure the interface, not the silhouette

Record units and exactly which edges touch or support the fitter.
For a spider fitter, note whether the shade rests on a harp and whether a finial interface is relevant.
For an Uno/gallery fitter, identify the ring that sits at the holder; do not confuse top and bottom openings.
Clip-on and proprietary designs may need maker-specific identification.
Compare candidate shade drop with the lamp's available clearance, but do not force or test-install a fragile object.

Interpretation: a diameter difference within your entered tolerance is only a measurement-screening result. The fitter profile, ring thickness, support geometry and lamp condition still need direct inspection.

Compatibility questions for the seller

Where was each diameter measured, and with what tool?
Is the fitter round, level and free of visible deformation?
Are harp, gallery or adapters included and original to this lamp?
Can the shade be viewed with the exact support before purchase?
Are there cracks, repairs, loose joints or altered fittings to disclose?

Fit matcher FAQ

Does a matching diameter mean it fits?

No. It screens one dimension. Fitter style, profile, support height, contact points, condition and the actual lamp arrangement can change compatibility.

Can the tool recommend rewiring or a conversion?

No. It does not give electrical, mechanical repair or conversion instructions. Consult a qualified lighting professional and conservator for condition-sensitive objects.

Is a shade fitter the same as an oil lamp burner?

No. This matcher is specifically for the shade support interface. It does not assess burner threads, chimney base diameter or flame-related components.