01-04-2021, 01:30 PM
I have 2 of them and still use them. It's often easier to use a sr to see various answers quickly or approximate comparisons. Sight Reductions can be done but there's a need to be very careful since I'm no expert in mathematics or slide rules. There are many different types of slide rules and some that are specific to celestial navigation if I remember correctly.
Survivorlibrary is very good.
Fred
Survivorlibrary is very good.
Fred