difference between 3468a and 3468b

[Andy]

I just came across an hp3468b multimeter. It has HPIL ports in the back. Whats the difference between this and the well known 3468a?

Andy

[Grant Goodes]

I believe it is just a difference in the casing, with one
being a molded plastic case intended for bench-top use,
and the other more square and compatible with rack use.

[Ellis Easley]

Yes, I verified that in my 1986 HP catalog. A is the portable, B is the rackable. Both were $750 in 1986.