Angles Part-1 

Good video

I have a question, most transits are made with the scale to turn angles to the right so how can you turn them to the left with that type of transit? Is there another transit with the scale set for the left turns?

So my professor is so lazy that instead of actually lecturing us about this, he just links this video 😂😂😂

How can i get the backsight? Is that given?