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Anyone know how to use a Vivitar 35 light meter?

I recently found a Vivtar 35 light meter in my camera’s case, but have no idea how to use it. It would be extremely helpful to me because I don’t have the money or means to replace my camera’s current dead light meter battery at the present moment and need a quick fix to my problem so I can achieve the photographs I am looking to take.
Any help would be greatly appreciated.

I should be pretty straight forward; set the ASA of the film you are using, aim the meter at the subject, press the activation button and then look at the reading. When you match the reading to the shutter speed and aperture index, you will see all the possible settings that will give you a proper exposure.