drop indicator वाक्य

In some cases multiple drops in isolated areas were made at different intervals and bonfires would be used as drop indicators instead of flashlights.
DTI tips are often threaded for interchange ( like drop indicator tips ), with small flats to accept a spanner; but the intent regarding user-serviceable tip change is limited only to the tips that originally came with the indicator, because of the above-mentioned importance of the length.
Changing the tip of a DTI is not as simple an affair as changing the tip of a drop indicator, because the tip, being a lever, has its length precisely matched to the clockwork inside the indicator, so that the length of the arc of its extremity's movement has a known ratio to the gears that drive the dial's needle.