India today launched the Skill Certification Assessment for Leather Employees (SCALE) app that offers a one-stop solution for the skilling, learning, assessment and employment needs of the leather industry. The app was launched by minister of education and skill development Dharmendra Pradhan during a visit to Central Leather Research Institute, Chennai.India today launched the Skill Certification Assessment for Leather Employees (SCALE) app that offers a one-stop solution for the skilling, learning, assessment and employment needs of the leather industry. The app was launched by minister of education and skill development Dharmendra Pradhan during a visit to Central Leather Research Institute, Chennai.