Glass test tube:it is used in rainfall measure, the test tube is marked with two scales, which can measure less than 12 centimeters or 5 inches of rainfall,flat-bottomed test tube
Test tube:this item is a test tube with scales, made of glass, and ,flat-bottomed test tube
Scale test tube:suitable for farming, meteorological statistics, climate research and so on,flat-bottomed test tube
Flat-bottomed test tube:flat bottom design makes it easier to place in the wild,scale test tube
Flat-bottomed test tube:flat bottom design makes it easier to place in the wild,scale test tube
