PERRY TWP.  Ohio Gratings executives are inviting the community to tour the company’s facilities on Saturday — in hopes dozens of people will leave with jobs. The manufacturing company would like to hire about 60 people across positions ranging from entry level to supervisor. An open job fair will be held from 8 a.m. to noon Saturday at 5299 Southway St. SW. No reservations are required. John Bartley, president and CEO of the company, said employees of Ohio Gratings are excited about what they do. And maybe, if they bring people onto the campus, they’ll “catch the bug like we have.” The demand for workers is twofold: There are existing open spots that haven’t been filled, and the company is preparing to move a unit from one building to another that will create a need for more people. The change is part of a project that’s pumped $18 million in capital investment into the company during the past two years. There are some office jobs available, but many of the open jobs are related to metals manufacturing. The company does grating design, manufacturing and fabrication and has shipped custom-made pieces across the globe.  Qualifications for entry...