Linked from
The 13 pages that link to Isobar, each with the reason it gives.
BarometerRelated: Barometer readings provide the observations used to draw isobars.
Mass numberCompared with: Isobars share mass number despite belonging to different elements.
NuclideCompared with: Isobars share total nucleon count, unlike isotopes, which share proton count.
Isarithmic mapBroader topic: Weather maps use isobars to display spatial pressure patterns.