To convert 7mm to inches, we first need to understand the conversion factor between the two units. 1 inch is equal to 25.4 millimeters (mm). This means that 1 mm is equal to 0.03937 inches.

Now, let’s follow the steps below to convert 7mm to inches:

Step 1: Write down the given value in millimeters. In this case, the given value is 7mm.

Step 2: Multiply the given value by the conversion factor. In this case, we will multiply 7mm by 0.03937.

7mm x 0.03937 = 0.27559 inches

Step 3: Round off the result to the desired precision. Since we are converting to inches, we will round off the result to 2 decimal places.

0.27559 inches rounded off to 2 decimal places is 0.28 inches.

Therefore, 7mm is equal to 0.28 inches.

In summary, to convert 7mm to inches, we multiply the given value in mm by the conversion factor 0.03937 and round off the result to the desired precision. This can be represented as:

7mm x 0.03937 = 0.28 inches