good question...
its like i sell 1.8m dishes, other installers sell 1.9m dishes, but the dishes actually measure 1.82m.....but 1.9 sounds as if you are getting more for your money...
i have seen an offset dish sold as a 1.35m - it actually has measurements of "Diámetro Mayor: 1.37 m Diámetro Menor: 1.22 m"
there is a Famaval 1.4m prime focus dish
so there is a difference as they are two different types of dishes.
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