Aluminum extruders use the Kelk 2010 to measure the actual tonnage being applied to a billet. The 2021's high sampling rate (200Hz) catches peak pressure spikes that older units missed, preventing die failures.

Without more specific details on what the "KELK 2010 Portable" entails, it's challenging to provide a precise comparison. However, the evolution of portable devices from 2010 to 2021 showcases significant advancements in technology, functionality, and user experience.

Just don't call it an iPod.

Interestingly, many users prefer the 2010 edition over later releases like 2013 or 2017. The 2010 version is widely cited as the most