Subject: We want to buy replacements for the Keithley model 169 DMM

We want to buy replacements for the Keithley model 169 DMM for use in making DC 
measurements of R, V and I in our first semester labs on DC circuits. The 
Keithley 169 has been sufficient for our needs except that we want to get 
autoranging.  Some increase in capabilities (like 51/2 digits instead of 41/2 
digits) would be nice but is not required.  What autoranging DMM has been 
dependable, student-proof and theft resistant in your introductory lab? 

We are looking for recommendations regarding Multimeters to be used in a genral 
Physics Lab here at our University.

Re: We want to buy replacements for the Keithley model 169 DMM