Why Ohmmeter Scale Is Not Linear?

Ohmmeters contain internal sources of voltage to supply power in taking resistance measurements. An analog ohmmeter scale is “backwards” from that of a voltmeter or ammeter, the movement needle reading zero resistance at full-scale and infinite resistance at rest.

What is nonlinear in ohmmeter?

​Parts of an Ohmmeter

It indicates the value of electrical quantity that has been measured. ... Ohmmeter Scale- Nonlinear scale where reading of the resistance is based. It is usually found in the uppermost part of the VOM. Range Multiplier- The portion of the ohmmeter where the actual reading is being multiplied.

What does it means when the pointer of the ohmmeter moves to the left side of the meter?

When the test leads of an ohmmeter are separated, the pointer of the meter will return to the left side of the scale. The interruption of current and the spring tension act on the movable coil assembly, moving the pointer to the left side (∞) of the scale. Figure 1-31. - a simple ohmmeter circuit.