NEW FEATURES ADDED IN 2012 - The SC 900 meter now includes the 1/2" and the brand new 3/4" cone tip, plus an upgrade firmware chip for improved handling of insertion errors. These new features took effect with units shipped after January 1, 2012. Meters acquired prior to 2012 can be upgraded by purchasing the SC900 Upgrade Package (Item #6110FSUP). The upgrade includes a microcontroller chip with updated firmware, a 3/4" cone tip, new depth target, and updated User's Manual. See Additional Features of SC900 Digital Compaction Meter for more details.