Strain Gauge
Ok Strain, so the 747 , 742 thing it was a typo, why make a big thing of it.
Everyone can make mistakes. In fact, you just made a typo yourself. It's Lan Ding Gere and not Lan Dingy Gere.
However, at least genuine people who know the information have made an effort in sharing the informatin and helping those like myself.
And as for your time ? You mentioned you don't know why you bothered. Good question. Why did you bother typing junk if you know it's not going to be of any help to anyone.?
You need to take a break from your text books as just as your names suggests, you're under a lot of strain, so please take it out on something else rather than post a comment that is of no use.
LDG