Dear Leena,
If the attitude is defined as what you have mentioned here, then it can be measured too. What you have referred to as attitude here are all adjectives. Adjectives have degrees, and when there is a degree, there is a measurement. This is a general logic. However, as Mr. Simhan said in his earlier post, had you looked into the history of attitudinal measurement, then you would not have come to this conclusion. Please refer to Mr. Simhan's post, wherein he has mentioned the Thurston scale as well. Thanks, Mr. Simhan, for your inputs (but of course, for asking a query, the case is different). Thanks, Mrs. Simhan, for your compliments.
With best regards,
David Wilson