Philadelphia Gear Corp. appointed Charles L. Zirkle as the on-site technical services project manager. According to the company’s press release, Zirkle has worked for Horsburgh & Scott Co. for the past 34 years. For the past five years, he served as field services manager. In the new position, Zirkle will coordinate the on-site technical service product offering, working closely with the company’s five regional service centers to provide complete coast-to-coast coverage and provide the company’s customers with another important aftermarket service.