Pocket-sized general technical use No. It's a set of 6 slide rules.
I found these at an old stationery store. Due to years of storage, the boxes have some wear and tear. Since these are old items, please make your judgment based on the photos, and I appreciate your understanding. We do not mark merchandise values below value or mark items as "gifts" - Japan, US and International government regulations prohibit such behavior. Thank you for your understanding.