Measurement of Depression

I searched for a scale how to measure depression but could find nothing on the internet! Which is pretty strange as I thought in modern era, almost everyone becomes depressed every now and often.

So I took the pain of defining a scale myself (time pass - eh?).

This is how the scale stands. Please note that the scale is logarithmic (like Richter scale) rather than linear!

Highest to lowest

[9] Lost off sight/limbs, permanent disablement, loss of children, spouse, life threatening illness (eg cancer) to self or loved ones

[8] Divorce (including setback in relationship)

[7] Chronic illness (not life threatening but hampers daily life)

[6] Loss of job/business [including imminent loss which is almost certain]

Set back in professional career - denied promotion, did not get the job wanted, demotion, unable to start a business venture, unable to find date/spouse etc. [ie something you want but can not get it - you feel you deserve it - but you never got it so far], Bankruptcy etc.

[5] Acute monetary shortage - not being able to buy basic necessities like food, clothes, shelter etc.

[4] Loss of large amount [relative] of money/reputation/social status or something which has psychological equivalent of money to the depressed person

[3] Unfortunate incident - accident but no bodily injury or massive monetary/reputation/etc. loss, being robbed off, pick pocketing, burglary etc.

[2] Inconvenience, water leaking from roof, broken down on road etc.

[1] Trivial - food was cold, could have saved £1 by buying from elsewhere, got drenched because didn't carry umbrella, camera I wanted is out of stock etc.

Note: This is measurement of initial depression, as time passes, the depression level usually goes down as people become accoustommed with deperssed condition gradually.