Bullhorn, Measuring Instruments, models:

RM1250	User Manual
RM4000 Series RM4010	Quick Reference Manual
RM4100 Series	Installation & Configuration Quick Reference Manual
RM4150	Installation & Configuration Quick Reference Manual
RM4200 Series	User Manual
RM4211	Quick Reference Manual
RM5 I/O4	User Manual
SDT16 Family	Installation And Configuration Manual