jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Высокоточные аналитические, лабораторные, платформенные и полумикровесы 1го специального и 2го высокого класса точности по ГОСТ OIML R 76-1-2011. От российского производителя Госметр