An imaginary line through the optical center of the lens perpendicular to the negative photo plane. Dictionary of Military and Associated Terms. About the Company Legal Status of Firm: Limited Company Number of Employees: 51 To 100 People Annual Turnover: 40 L - 1.5 Cr company-description: Established in 2014, we, HN Protech Pvt Ltd are a highly famous organization of the industry involved in wholesale trader of best quality Camera Kit, CCTV Cameras, Video Door Phones, Fire Alarm Systems, Digital Video Recorder, Video Door Phones Kit, Hard Disk Drive, Access Control Systems, Audio and Video System and Intrusion Detection System. We are service provider of Installation Services. Our provided products are manufactured at our vendor's ultra-modern processing unitby taking only optimum quality components. These products are highly demanded by the customers for their accurate dimension, fine finishing, high functioning, super performance and longer service life. In addition to this, we are offering Installation Services to our valued clients.