How does a lactometer work ?

Hello,

1. Working of loctometer :-It is based on the Archemedes' principle. When we put loctometer inside the liquid it experience buoyant force(weight of displace fluid). Hence measure relative density in the given scale of loctometer. Lower the density of liquid farther, the loctometer will sink.  

2. The qualities of milkman are: Honesty and Concern for others.