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Yes I corrected my images.  But there is still an error in the readings.

My Fluke 75 for example reads 3 Meg on a small PN junction in a transistor C-E and 638 mV. This is normal even for an analog meter because of the very low constant current used to measure resistance.  If it changes currents with full scale, it might be as high as  1mA for 10 Ohms full scale,  but never for Diode test mode. This uses a current much less than 1 mA to save battery energy.  Your reading of 0.617 Ohms is actually what I would expect if the meter used 10 to 30 mA in 100A industrial diode with a high ideality factor.

The Ohm reading is false. It is lower which might occur if you measured 490 mV/1mA or 490 V/1A  It should be reading > 100 kOhm  This should be the diode leakage resistance as Ohm reading use very low current.

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For a standard 1 A diode , one should expect the resistance to meet specs at 25'C

e.g. 1N4005

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For 1.999 full scale Ir max=10 uA this implies worst case 2/10e-6 or 200k or 2V/0.05 uA = 40 Meg typical

The Industrial diode rated for say 50 to 100A will be more like 10k to 100k resistance in DMM's and measure less than 500 mV in diode test mode due to the lack of bulk resistance voltage rise at 50 uA.

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