This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
If a certain quantity of liquid is to be frequently measured out, it is best to have a graduate marked for this amount without any other markings upon it. To make a graduate for this purpose, procure a pickle or olive bottle of the type shown in the drawing and file a vertical line, A. on each side. These lines should be at least 1/8in. wide. Place the bottle on a level surface and pour in the amount desired to be measured. Mark on each vertical line with a lead pencil and connect this mark or marks with lines, filed as shown at BB. - Contributed by James M. Kane, Doylestown, Pa.