An on-line collection of calculators.

[Skywave]

I must have looked at that when I was searching that Site, and I even remembered thinking that the back looked familiar, but I didn't connect it with my memories.
Alann

I can only refer you to my earlier post #11.
And it's somewhat re-assuring to discover that I am not alone in my struggle . . .
But Shakespeare understood:
Age, with his stealing steps,
Hath clawed me in his clutch.
[Hamlet; 5.1.73-4]

Al. / Oct. 31, '13 //