Slide rule made by HEMMI. This is a retro item, so how about using it as decoration in your office, etc.? ・Brand: HEMMI ・Model: No. 2624 ・Function: Slide rule ・Size: Approximately 15cm ・Other: Comes with a case. Please understand that this item has been stored at home for a long time. Please check the photos for details on the condition. Thank you for looking.