Millilitres, ml, is a unit of volume rather than weight. The weight (strictly the mass) of a glass of water would be measured in grams. To weigh a glass of water, you'd just put it on a simple top pan balance. To measure the volume, you'd transfer the water to a vessel with a calibrated scale on the side, eg a measuring cylinder.
A balance can be used. Water has a specific gravity of 1, meaning that 1000 ml of water weighs 1000 grams. Weigh the glass with the water in it and note the value (A). Pour away the water. Weigh the glass and note the value (B). Subtract B from A, resulting in the weight of water, Then convert the weight of water to volume: each gram of water = 1 milliliter of water. A graduated cylinder.
a scale
It is relative to the amount of water and the weight of the glass. Obviously, an eight ounce glass of water would weigh 8 ounces plus the weight of the glass. <><><> The weight of a glass of water depends on the amount of water in the glass. A common size of water glass holds 8 fluid ounces of water. In rough terms, one ounce of water weighs one ounce (weight). This gives the answer that a glass of water weighs half a pound. (The weight of the glass is not included in this half a pound.) To be more precise, an Imperial Ounce (used in Britain) is 28.41 millilitres. This would give 8 ounces a mass of 227.3 grams. (0.500 pounds weight) In the United States, a Fluid Ounce is 29.57 millilitres, which gives a mass of 236.6 grams. (0.52 pounds weight).
screw gauge
Microscope Magnifying Glass
magnafing glass
Magnifying glass
tripod
No.
A hygrometer is used to measure water vapor in the atmosphere. This instrument can measure humidity levels in the air to determine the amount of water vapor present.
Of course.
A magnifying glass can be used for water purification by focusing sunlight through the glass onto contaminated water. The heat from the concentrated sunlight can kill harmful bacteria and pathogens in the water, making it safer to drink.