SC501  -  5- MHz Oscilloscope
Single Width Plug-in
Bandwidth:  5 MHz
Channels:  1
Sensitivity:  10 mV/div
Sweep Rate:  1 uS to 100 mS
 (in decade steps)
Price in 1991 catalog $2995

SC502  -  15 MHz Dual-Trace Oscilloscope
Double Wide Plug-in
Bandwidth:  15 MHz
Channels:  2
Sensitivity:  1 mV/div
Sweep Rate:  200 nS to .5 S
  w/10x:  20 nS
  20 steps in 1-2-5 sequence
Price in 1991 catalog $3295

SC503  -  10 MHz Dual-Trace Storage Oscilloscope
Double Wide Plug-in
Bandwidth:  10 MHz
Channels:  2
Sensitivity:  1 mV/div
Sweep Rate:  500 nS to 2 S
  w/10x:  50 nS
  21 steps in 1-2-5 sequence
Price in 1991 catalog $4995

SC504  -  80 MHz Dual-Trace Oscilloscope
Double Wide Plug-in
Bandwidth:  10 MHz
Channels:  2
Sensitivity:  5 mV/div
Sweep Rate:  50 nS to .2 S
  w/10x:  5 nS
  21 steps in 1-2-5 sequence
Price in 1991 catalog $5295