I am very happy with my sextant for Christmas. I would not try to cross the Pacific with it as my one and only, but could be used as a backup for finding the latitude. By the way, GPS can fail and batteries die; knowing how to us a sextant can be a life saver.
Very cheaply made brass item from India with terrible workmanship. Much smaller than pictured. I returned it right away and requested Acorn also refund the return shipping fee which they did. I'm shocked that Acorn would offer such a piece of junk. Save your money and select something else. This is the first bad thing I've bought from Acorn.