Forums Recent Posts Forums Land Surveying & re... GNSS & Geodesy R10 GNSS Part numbe... Notifications Clear all R10 GNSS Part numbers GNSS & Geodesy Last Post by hisham 8 years ago 1 Posts 1 Users 0 Reactions 4 Views RSS hisham (@hisham) Posts: 4 Registered Topic starter 1-what is the deference between R10 LT and R10? . 2- what is deference between P/N 90911-60 , P/N 90901-60 and 90909-60 ? Posted : February 19, 2017 4:53 am Share: Tweet Share Share