Sweep Zone numbers installed along the sidelines of a curling sheet are a useful training aid when teaching teams to call weight by zone numbers.  You need one set of numbers for every two sheets of curling ice.

Place the numbers during your ice install so that the vertical blue line sits exactly atop the sideline between two sheets.  Align the lower edge of each Sweep Zone Number with the measurement from the back line as indicated in the instructions provided.

Each set contains two of each number so that it can be installed at both ends of the sheet.