For Sale Is a Boonton 76-3A capacitance test fixture for a variety of the Boonton capacitance meters.  Accuracy is 0.1% or .001pF.  It can also be used with other manufacturers capacitance meter as well.  Maximum frequency is 1MHz but its also good at any frequency below that.

It comes with a 30-day warranty and ships within 48hrs maximum from the time payment is received although we can oftentimes ship the same day.