Champion makes indicators (plastic) that go up to 3 balls, 2 strikes and 2 outs. You can get them here:
The Sports Loft / Officiating Uniforms / Chuck DeCarbo / Baseball / Softball
I am sure the oversize fits your bill, not sure about the smaller 3-wheel. The metal one and the 4-wheel (ugh) both go to 3,4 and 3.