This is a used Mura Meter multimeter. Made in Japan Price $25.00, cash only.
I do not know how to test or calibrate this item. However, the second "photo" is a video wherein I first held the leads together to check the ohm function. Then I put the leads on a used double A battery. The "zero ohm" knob works. This is the extent of the testing on this meter.
As I know nothing about multimeters, this item is being offered for "Parts or Repair".
The leads are in good condition. . One has an alligator clip, the other a point.
The phenolic case is in decent condition. There is minor rubbing, some pitting and scratches , but nothing to detract from the general appearance or functioin. The handle is also in good condition. One of the four screws to hold the back on is missing, the one at the lower right, see photo.
It is solidly built and weighs in at approximately 2# 11oz. It measures approximately 7" by 5" by 3", not counting the handle. In function and feel this reminds me of a Simpson Multimeter 260.