Re: "Meter Movement"
It appears that the objective here is to learn how to design a circuit that allows one to measure Voltage, Current, and Resistance over several ranges with nothing but a power source and a few resistors and a simple meter. The exercise teaches how a VOM multi-meter (whether digital or analog) works. And it gives you the understanding how to measure and scale various electrical properties.
For example, if you were making a bench power supply, you would understand the principles of using a shunt to measure current. Doesn't matter whether you are displaying the current on a vintage D'Arsonval panel meter, or feeding an Analog to Digital converter input.
When the book says "bare meter movement" it means a simple analog panel meter. It does not mean the very fragile and delicate D'Arsonval motor mechanism INSIDE the case. Unless you intend to become an "electronic archaeologist" and repair the antique things it is sufficient to understand that the meter needle moves relative to the amount of current through the coil.
If I were doing this experiment, I would get something like: 50UA DC PANEL METER - CAT# PMD-50UA
$12.00 each"
http://www.allelectronics.com/item/pmd-50ua/50ua-dc-panel-meter/1.htmlUsing a meter that already has all the Volt, Amp, Ohms scales printed on it (as that Ebay Simpson replacement) is "cheating" as it has already worked out the non-linear resistance scale, etc. The objective of the exercise appears to be working out the circuit configuration, resistance/shunt values, and creating your own scales, especially for resistance.