Visibility: A clear top allows you to see the liquid inside the sprayer, so you can easily check the level and make sure you have enough for your task.
Mixing: If you are using a sprayer to mix chemicals or other liquids, a clear top allows you to see the mixture as it is being sprayed, ensuring that it is properly mixed.
Precision: A clear top can help you aim the spray more accurately, as you can see where the liquid is going. This can be especially useful when applying pesticides or herbicides, as you want to make sure you are applying the spray directly to the target area.
Safety: A clear top allows you to see any clogs or other issues with the sprayer, so you can address them before they become a problem. This can help prevent accidents or injuries.