Sakura PDA-81U B/W Reflection Densitometer See Description And Pictures Please

Description

Sakura PDA-81U B/W Reflection Densitometer - Working.
Does power on. Needle does move as the amount of light changes. But beyond that I have not tested for accuracy. I honestly do not know how. I did a small amount of research and seems best to sell as powers on untested for this particular product. No issues with corrosion, stored without battery. Adjustments made (see pics and needle position) in pics with zero adjustment knob on bottom.
Please let me know if you have questions and I’ll do my best to answer.
Thanks in advance.