3” dia. for up to a # 6 line. Reel was made in England. I would guess by Hardy. It is in excellent like new condition maybe never had a line on it. It’s in a big collection for the last fitly years . It has veryi nice sounding click This is a great piece of fly reel history to use or collect. Note it has reel makers stamp on reel. A lot of hand work went into this reel