light meter
exposure meter
photometer

I can still use it, if I get out my hand-held exposure meter.

Historically, a photometer was separate from the camera and known as an exposure meter.

Likewise a switch for the exposure meter was also dropped.

The exposure meter was always on, even with the lens inserted.

As a result, the exposure meter will not produce a usable reading if the shutter release button is under any pressure.

Your exposure meter goes on the blink far from civilization.

"It gives you correct settings in lighting that fools your exposure meter," he claims.

He stood at the balcony door and aimed the exposure meter.

He went back into the room and checked the exposure meter on the Leica.

In each case, the actual exposure level is still determined by the camera's exposure meter.