It has even some diagrams. Scales and diagrams changed each others using turning handle at the right side. You may turn it clockwise and counterclockwise. Inside the Slide Rule there are two spindles on which winds up the proofed tape with scales. Has also the mobile cursor.
There are two lamps in sockets inside body for illumination from outside battery. The second circular slide rule is on the top part (calulate something about the Wind) Dimensions - 12.543.5 inches.
Weight - 1,91 kg!! Comes with manual/description, logging, table for notes (metal), wires, 4 addit. The item "AP-7 for D-30 Vintage USSR Soviet Russia Military Artillery Revolving Slide Rule" is in sale since Thursday, September 6, 2018. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Engineering\Slide Rules".The seller is "depot4sale" and is located in Europe. This item can be shipped worldwide.