I'll be honest and tell you that I know next to nothing about this meter. I believe it's the same one as in this Spiratone advertsement, which is where I got the date and price. The specs in the ad and the line-drawing are a dead-on match, except that mine has a flip-open front cover with a slit, whereas the Spiratone drawing suggests a grate.

Capital is a Japanese company that makes a variety of meters. I've never heard of them, but I've seen similar looking meters sold under other names, so I suspect that Capital meters are commonly re-branded for the USA market (e.g. this Capital SP-1 looks like the Soligor, and I believe Spiratone had an SP-1 which was the same, and so forth).

Probably the smallest meter I have. Like the Fris, its leather pouch was meant to ride a camera neck-strap. The meter itself has two screw-holes that suggest (to me, and confirmed by the ad) that it could be mounted onto a foot and placed in a camera's accessory shoe.