I recently purchased a used Gossen Luna-Pro SBC from George Urey. He didn't hav e the instructions for the meter. The meter is in great shape and gives reading s as I would expect. General usage seems straightforward.

However, I have been unable to find anything that locks the needle when the mete r is not in use. As a landscape photographer, I seem to be hauling my gear arou nd in a back pack, or something equally likely to receive abrupt knocks. I'm con cerned that I may damage the meter if the needle is free to move during the bump ing.

If the meter doesn't have a needle lock, does anyone have a feeling for how sens itive the meter is to this kind of handling?

Thanks, Bruce