If you are looking for a degree symbol......
Some of the labels to be transcribed include specific item locations using degrees, minutes and seconds.
If your keyboard does not have a degree symbol (the tiny circle that appears near the top of the line),
you can find one, along with many other technical symbols, at http://symbols.typeit.org/
You click on the key with the degree symbol and it appears in a text ares on the web page. You can highlight it
and copy and paste it.
Please give the FAQs and Useful Tools a read if you haven't seen it yet... as well as covering many of the transcription standards to ensure concurrence of results, this is also included.