I am very pleased to introduce you this :

Vintage 1964 Russian Federation USSR Leningrad GOST / ГОСТ 5161 - 57 
Engineering Slide Rule Tool СССР  

Measures : 11"/28 cm x 1 2/4"/3.8 cm x 2/4"/1.3 cm

Box : 11 1/4"/28.7 cm x 1 3/4"/4.5 cm x 3/4"/2 cm

1 inch = 2.54cm

Condition: 

Good Used Original Condition.
Please, be sure to view all photos  carefully as they are included as part of the item description

Auction terms and conditions:
Please be aware that I sell old authentic, original collectable items with expected reasonable age related wear.
All my items are described the best way I can, if any question please do not hesitate to ask.
Any question will be answered on time depending on the time - zone differences.
Package will be wrapped with high quality materials to prevent damages during transportation. 

I do combine shipping charges in case of Multi - Buy, always aiming 1 day handling time.
Please check on all my other listings or visit my shop, to find another treasure.
Happy Bidding.