- It utilizes same principle of Capillary tube but it enlarges its surface to get better & accurate output.
- The types of U-tube meters are
1)Ostwald capillary
2)Ubbelohde capillary
3)Cannon-Fenske capillary
4)Houillon capillary
1)Ostwald capillary
2)Ubbelohde capillary
3)Cannon-Fenske capillary
4)Houillon capillary