Same unit.
Same endpoints?
Total length, a named usable segment and a photo's apparent size are not interchangeable. Read the labels before comparing.
- Total length
- Ask which endpoints the manufacturer includes, including any base or handle.
- Usable length
- Use the manufacturer's named segment. Do not infer it by subtracting an unlabeled part from a photograph.
- Image scale
- A responsive image changes display size. Use written dimensions, not an on-screen ruler.
Convert the number, not its meaning
1 inch is exactly 2.54 centimetres. Results are rounded to four decimal places. This conversion does not recommend a body size or assess comfort.
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