If you have a lot of time to measure the volume of the same liquid or granular materials, make the appropriate mark on the measuring circle, glued at the right level strips of adhesive medical tape. At the same time can be done on them and the labels which are specified died.
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IF THERE IS NO KEY
In the case when working with a drill and the hand key to tighten the Chuck, you'd get a screwdriver with a nail, an extra drill or any metal rod of suitable diameter. As they interact,...
SPACED AXIAL
To hold the centerline on the workpiece will help the device shown in the figure.
