[WTB] Current Sensor Network CADDOCK 1787-53 for KEITHLEY 2001 / 2002

[Le_Bassiste]

i'm currently in the process of repairing a keithley DMM with a faulty current sensor network CADDOCK 1787-53. can't seem to find it at the usual distri suspects, though. 
any suggestions where i can buy it online, or maybe someone has a functioning spare that he/she  would be willing to sell?

thanks!

[wraper]

Note that you can also use 1787-535 which has better tolerance or 1787-5 which has worse tolerance.
http://www.caddock.com/Online_catalog/Mrktg_Lit/Type1787.pdf

[Le_Bassiste]

with digital calibration, higher accuracy is pretty much pointless, unless it comes with equal or higher precision / better long term stability.
neither the -5 nor the -535 do that. thus, the -53 is actually the best out of the three choices.

[wraper]

with digital calibration, higher accuracy is pretty much pointless, unless it comes with equal or higher precision / better long term stability.
neither the -5 nor the -535 do that. thus, the -53 is actually the best out of the three choices.

I mentioned more part numbers so you have better chance getting something at all but you talk about the best choice  .