Calculators I actually use.

[c3d]

(12-11-2024 09:42 PM)Maximilian Hohmann Wrote:  My list is quite short compared to yours. The only one I really use is the smartphone app shown below that can add and subtract times (and nothing else). I only need that at work, so I don't make stupid mistakes when filling in logbooks. I would prefer to have it in hardware, but unfortunately nothing like it was ever made.

On SwissMicros DM32, DM42 or DM42n with DB48x / DB50x, the key sequence to perform the addition in your example is:

[1][.][2][5][.][ENTER]
[2][.][1][2][.][+]

The second dot transforms something like 1.25 into 1°25′_dms on the command line. You can obviously add seconds and, if you type one more [.], fractions of a second.