There are two versions of the Spotmeter V out there. The older meter has one scale for low values and one scale for high values. To change to the lower scale you use the trigger button on the handle under the lens. The high scale is always on if I remember correctly. The newer analog meter has one scale period. You activate the meter with that same trigger. It is the older meter that uses the 1.35 volt battery that is not available any more. Someone mentioned some kits for batteries but I have heard that these really eat batteries, but you can buy a lot of batteries for what a new digital meter costs. I had one of the older meters and sadly I killed it one day on my driveway by dropping it on its little head.
edited for content one time by l\c