First and Third Projection Symbols

[Daryl_bee]

...snip that any supplier of drawings needs to agree on and standardize the conventions that will be used in that environment and/or for a client that wants it a certain way.

snip...

The wonderful thing about "standards" is that there are so many to chose from!

 

[willray]

For the record, Casio calculators RULE !...................HP calculators drool !
I still have the two original Casio calculators that got me through school, and last time I checked, they still worked perfectly.

HP 41CX sir. HP calculators have no equal.

 

[vk7krj]

That jogged the memory a little- had a rummage in the cupboard- and sure enough, my HP35 and HP11C are still there. The 11C still turns on (batteries must be close to 30 years old now....) but no battery pack or psu for the '35 any more.

So I had a bit of a play with the 11c- just enough to convince myself I can't remember reverse polish notation any more!

And then I removed those 30 year old batteries- thanks for the reminder Willray.

 

[Circlip]

"View in direction of arrow ' ' " never fails

Regards Ian

 

[ssaxer]

I still have one of these and can still play "lunar Lander" on it.

 

[Charles Lamont]

Nice to have one still working. I think the one I had was a 33E. I reluctantly gave up on it after it had to be sent back several times for a faulty power slide switch. I found a good landing involved free fall until the last possible moment and then full retro.

 

[GRAUBELE]

Hello everyone

I also have three “calculating machines” here, two from around 1975 and one earlier.
All three are still fully functional.
Commodore GL-996R (left side)
Commodore GL-987R (right side)

(The data entry also works well.)


Best regards
Dieter

Still “old school” inside.

 

[GRAUBELE]

It just now occurred to me that the two computers are my “green twins”.

 

[GreenTwin]

LOL, those Commodores are really getting back early in the hand calculator era.

And one of those dreaded slide rules in one of your photos.
I entered college when they were still teaching the slide rule (1976).
It scared me so bad that I quit college for two years, and worked odd jobs.
I tried again after two years, and the dreaded slide rule was gone, and they had gone to hand calculators.
"This I can do" I told to the teacher.

I never could master the slide rule, but most of the folks I worked with had one hanging on the wall, and they could use it easily.
I had a slide rule phobia.

They also use to terrorize us with the Smith chart.
I never mastered the Smith chart either.

.