Fluke 91 Series II?

[wd5jfr]

Bought one at a hamfest and it should be useful.  Works well on all the functions I've been able to test (confirmed with my Fluke 189II)  but I'm curios why I  have to use a scope probe to measure voltages over 3 volts rather than the regular test leads or am I using it incorrectly?  It didn't have a probe so I'm using a Tektronix P6100 and it appears to be making  connection with the red non-metallic BNC input.  If using the recommended PM8918 probe is better I wonder if anyone has a surplus one for sale and also interested in a DEMO BOARD and protective  surround case.
Thanks
Hank

[bdunham7]

but I'm curios why I  have to use a scope probe to measure voltages over 3 volts rather than the regular test leads or am I using it incorrectly? 

The banana jacks are intended for ohms, diode, continuity, temp and external shunt functions.  All normal voltage functions are through the BNC connector with a suitable probe.

https://assets.fluke.com/manuals/scopemt2umeng0000.pdf