From I495 in Andover take exit 99 onto Rte 28 south. In about 1/4 mile, you reach Shawsheen Square, at the junction of Routes 28 and 133. Make a hairpin right turn onto Poor Street, passing Shawsheen Village Liquors on your left. Bell-Time Clocks is the first house on your right at 53 Poor Street. You can park on the street in front of the house.