Estimating your expenses means that you are

Estimating your expenses means that you are trying to stay up to date with how much money you might have. To be more precise so you don't have to estimate there are many methods you could use.

Hope this helps,

Davinia.

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.