'Scales' in the Bible

These shall ye eat of all that are in the waters: whatsoever hath fins and scales in the waters, in the seas, and in the rivers, them shall ye eat.

And all that have not fins and scales in the seas, and in the rivers, of all that move in the waters, and of any living thing which is in the waters, they shall be an abomination unto you:

Whatsoever hath no fins nor scales in the waters, that shall be an abomination unto you.

if when the priest examines the skin rash and indeed it appears more extensive than skin deep, and it's accompanied by fine, yellowish hair, then the priest is to declare him unclean. The scales on the head or the beard are an infectious skin disease.

But when the priest examines the scales of the skin rash and it doesn't appear more extensive than skin deep and there's no black hair in it, then the priest is to isolate him for seven days.

When the priest examines the skin rash on the seventh day and finds that indeed the scab did not spread, there's no yellowish hair on it, and the scales don't appear more extensive than skin deep,

"But if the scales spread on the skin after his cleansing,

Have true scales, true weights and measures for all things: I am the Lord your God, who took you out of the land of Egypt;

You are not to bring to the LORD an offering that is blind, fractured, mutilated, or infected with ulcers, scurvy, or scales. You are not to present any of them as an offering made by fire on the altar for the LORD.