Outer jaws are used. Inner jaws will be use to find the inner dia of the cylindrical vessel.
vernier calliper
Calipers measure the internal or external dimensions of something.
A vernier caliper
VariablesD = Cylinder diameter [L].Dbot = Cone bottom diameter [L].Dtop = Cone top diameter [L].h = Cone height [L].L = Cylinder length [L].T = Top width of liquid in cylinder [L].y = Liquid depth in sphere or cylinder [L].z = Horizontal to vertical side slope of cone. zDbot.Ø = Angle representing how full the cylinder is [radians or degrees]. An empty cylinder has Ø=0o, a cylinder with Ø=180o is half full, and a cylinder with Ø=360o is completely full.
vernier calliper scale. give us reading upto two places right side from decimal
vernier-caliper
If you have a physical cylinder to measure, measure the "width" of the circle that is the cross section of the cylinder. That is the diameter, Half the diameter is the radius.
If you have calibrated eyeballs
External diameter, internal diameter, and tooth count.
A set of calipers.
With a inside measuring micrometer
you measure across the top of the cylinder if it is a cylinder or across the circle if it is flat
Callipers
Measure external diameter. (A) Measure internal diameter. (B) Subtract B from A
It is not possible to answer this without more information. However to find the thickness measure the external diameter, measure the internal diameter subtract the internal from the external and that will give you the thickness of the pipe
vernier calliper
Assuming it is a rod, the difficulty lies in that it can't measure the diameter of the beaker. Unless you were to attempt to find out the Radius/Diameter, then work out the circumference from that.