Carefully open the measuring tape case by hand.

If the case is difficult to separate by hand, use a small flathead screwdriver to gently pry the casing apart. Do not use excessive force as it may break the plastic casing.

Hold the measuring tape firmly while opening the case, keeping a good grip on both halves. Gently slide a finger inside to hold the spring and tape case so it does not move out of place or unravel.