Sherlock Holmes compass with case

What would you gift a child who is curious enough? Well, a Sherlock Holmes compass would be a nice gift idea. It is a very robust compass made of brass and can be kept safely in a premium leather case that comes with the compass. The leather case is embossed with the same image of Mr. Sherlock Holmes as on the compass. 

Weight = 135 grams, 172 grams with case
Diameter = 5.7 cm