This SAE Standard applies to horizontal earthboring machines of the following types:a. Auger Machinesb. Pipe Pushersc. Rotary Rod Machinesd. Impact Machinese. Directional Boring/Drilling MachinesAdditional information on machines of this type may be found in SAE J2022 and SAE J2023. This documentdoes not apply to specialized mining machinery such as conveyors, tunnel-boring machines, pipe-jackingsystems, and microtunnelers.The purpose of this document is to encourage common terminology of machine control names,types, and definitions for horizontal earthboring machines.