dot-helper
nounUK /ˈdɒtˌhɛlpə/
US /ˈdɑtˌhɛlpər/
A dot-helper is a little tool or friend that helps you put dots in the right places.
Mia used a dot-helper to make neat dots on her drawing.
OTHER MEANINGS
2. A small device that places tiny drops of liquid in exact spots.
The lab used a dot-helper to add a drop of dye to each slide.
3. A person who assists with marking points on a map or chart.
The dot-helper marked each town on the big map.
4. A computer program that helps place small round marks on a screen.
The dot-helper made it easy to add dots to the picture.