public function isPalindromic() {
		for ($i=1; $i<=5; $i++) {
			if ((bool)($this->scale & (1 << $i)) !== (bool)($this->scale & (1 << (12 - $i))) ) {
				return false;
			}
		}
		return true;
	}
public function isPalindromic() {
		for ($i=1; $i<=5; $i++) {
			if ((bool)($this->scale & (1 << $i)) !== (bool)($this->scale & (1 << (12 - $i))) ) {
				return false;
			}
		}
		return true;
	}
public function isPalindromic ( ) { for ( $ i = 1 ; $ i <= 5 ; $ i ++ ) { if ( ( bool ) ( $ this -> scale & ( 1 << $ i ) ) !== ( bool ) ( $ this -> scale & ( 1 << ( 12 - $ i ) ) ) ) { return false ; } } return true ; }
returns true if a scale is palindromic.

@return boolean [description]
returns true if a scale is palindromic .