Lot of nine Tektronix plug ins for series 7000 oscilloscopes 

7B50 Time Base 7B53A Dual Time Base 7A29 Amplifier 7A28 7A18 7A26 Dual Trace Amplifier 

7A13 Differential Comparator 7B92A Dual Time Base 7B85 Delaying Time Base 

Untested sold for parts or repair  

Your items will be packed very well and shipped promptly.

Always glad to answer any questions.

Thanks for looking!