Pasco Scientific, Measuring Instruments, models:

ES-9054B	Instruction Manual And Experiment Manual
ME-9447	Instruction Manual And Experiment Manual
OS-8475	Instruction Sheet
OS-8501	Instruction Manual And Experiment Manual
OS-8537	Instruction Manual And Experiment Manual
PS-2235	Reference Manual
Pasport PS-2137	Instruction Manual
Pasport PS-2138	Instruction Manual
Precision 2.0	Instruction Manual And Experiment Manual
SF-9214	Instruction Manual And Experiment Manual