4 inches
10.16 cmLength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 4 inches?
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4 in
4 inches
The quantity is exact as entered.
10.16 cmLength
0 - shared origin
Nudibranch
A nudibranch is a soft-bodied marine mollusc, often brightly coloured, commonly known as a sea slug.
10 cmDefined body length
0 - shared origin
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. A ruler represents the selected distance or a measurement not visible in this view.
A little perspective
4 inches is about 1.02 times the body length of a nudibranch.
Measurements, assumptions & sources +
4 inches
Length: 10.16 cm; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Nudibranch
Defined body length: 10 cm; defined specimen; range 5 cm–15 cm.
A defined 10 cm dorid nudibranch specimen. Species range from millimetres to many centimetres; rhinophores and gill plume are included in the illustration but not the nose-to-tail calibration.
Smithsonian Ocean — Nudibranchs
The marked defined body length is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
Compare 4 inches with the body length of a nudibranch. The notes below explain how each value was chosen.
Nudibranch
10 cmDefined body length · defined specimen · range 5 cm–15 cm
A defined 10 cm dorid nudibranch specimen. Species range from millimetres to many centimetres; rhinophores and gill plume are included in the illustration but not the nose-to-tail calibration.
- Comparing
- Length ↔ Defined body length
- Relative size
- 4 inches is about 1.02 times the body length of a nudibranch. 4 inches is approximately 1.6% greater than the body length of a nudibranch.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- We use 10 cm for the body length of a nudibranch; the recorded range is 5 cm–15 cm.
- The body length of a nudibranch: This is an illustrative comparison value, not a claim that every example is the same.
- The recorded ranges overlap, so the ordering can vary even though the central values differ.
This comparison follows the selected length only; other dimensions may differ.
0.1016 mmetres
0.33333 ftfeet
6.3131 × 10⁻⁵ mimiles
6.7915 × 10⁻¹³ AUastronomical units
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