In the summer of ‘72 we were replacing the 35s that the survey crews had with 45s to eliminate the errors they were making from not converting the angle to decimal fraction before using the trig buttons.
I remember it well because of the ruckus with Nixon before the election that we jabbered about at the time.
The 35 was cute when it came out, but a constant source of boners with people in a hurry.
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So are you saying the HP Web site is wrong? That they don’t know when they introduced the HP-35? And that the HP-45 wasn’t introduced in 1973 as they also claim? None of which was 48 years ago?