No more debates and arguments when you're playing bocce ball. This measuring device will help you determine which ball is closest to the pallino (small white ball). Just put the device over the pallino and extend the tape measure to the red or green ball. Then lock the tape measure and swivel the caster to the other ball. Swivel back and forth between the 2 balls and you'll see which ball is closest to the pallino. The device is clear PLASTIC. It is 3" tall, 2 1/2” diameter, solid steel swivel caster, & sturdy tape measure. The clear PLASTIC device allows you to see the pallino. If the distance still looks like a tie, you can pull out the tape measure and use it directly to get a more precise reading. The tape measure is wedged in and not glued on for that purpose. No one can cheat! No more arguments or debates. You can just play bocce ball! Here’s what one satisfied customer said about the device, “I’ve purchased several of these measuring devices for our outdoor bocce club which has over 530 members. We play on courts with artificial turf and these devices have worked great. I’ve received nothing but positive feedback regarding the devices from our members. The devices shorten the time required for measuring bocce ball distances and are easy to use.” Marty Knezovich