TheDudemeister69: Use of a comma instead of a period is customary in many places in the world, though it looks strange to us (Canadian / American). In this case, 3,5 feet is what you and I would type as 3.5 feet.
This can be commonly observed in Latin languages such as French, Spanish, Italian or Portuguese in particular.
Now that it's brought up, it's funny I would say "trois virgule cinq pieds" verbally but still write "3.5 pieds" or even "3.5 ft" LOL which can be considered an "anglicisme", I guess.
And I completely forgot about it in a distant memory, but this also reminded me that up until l'école secondaire et le cégep, I was taught and used to leave a space in lieu of a thousands separator comma when writing large numbers.