how to you find the samllest division when reading a scale

Is this the scale on a stick? Count the lines between large divisions. If there are 10 lines, for example, between 1 and 2 inches on a scale, then ech line is 0.1 inch (one line/10 lines = 1/10 = 0.1). If I have misinterpreted the question (you may have been talking about a balance) please clarify and repost.

how do you know how much each line is beause in certain parts it may equal to .02 or etc dependinq on the width

To find the smallest division when reading a scale, you need to follow these steps:

1. Determine the units: Start by identifying the units of measurement on the scale. For example, if you're measuring length, the scale might be in centimeters or inches.

2. Identify the range: Look for the highest and lowest values marked on the scale. This will give you an idea of the overall range covered by the scale.

3. Count the divisions: Examine the marks or lines between the highest and lowest values. Count the total number of divisions on the scale.

4. Calculate the smallest division: Divide the range of measurement by the total number of divisions. This will give you the value of each division or increment on the scale.

For example, if you are using a ruler marked in centimeters with a range from 0 to 10 cm, and there are 10 divisions between the marks, each division would represent 1 cm (10 cm divided by 10 divisions = 1 cm per division).

By following these steps, you can accurately determine the smallest division when reading a scale.