Knitting Row Counter, Pretty Beaded Abacus

Abacus Bracelets Help Count Knitting or Crochet Stitches / The Beading Gem

Counting in style (bracelet row counters) Hook and Needles: Knitting and Crochet Blog (cool stuff, techniques, and things I find)

Counting rows. Knitting and Crochet Forum

WychwoodDreams

Abacus Quilt

Purple Abacus Row Counter Necklace w/Removable Stitch Marker, knitting – TheSexyKnitter

Amethyst - Knitting Row Counter - Twice Sheared Sheep

Chain Row Counter

Knitting Row Counter - UK