Great Minds Mini Range - Da Vinci's Ball Bearing Puzzle

Name: Great Minds Mini Range - Da Vinci's Ball Bearing Puzzle
Brand: Great Minds
Price: 11432.21 LKR
Availability: InStock

Product ID: 40378909

Secure Transaction

Frequently Bought Together

Description

Difficulty Rating: 4
Made of Wood

Aim: Can you make the ball bearings sit at opposite ends of the puzzle? Leonardo Da Vinci (1452-1519) He conceptualised the first helicopter. He knew that the propeller on his helicopter design would need to rotate extremely fast for lift off, and that he would have to find a solution to the friction problem. Ball bearings, together with a lubricant, would significantly reduce friction, greatly increasing the propeller's speed. Although the use of ball bearings was known to the Romans, it is Leonardo Da Vinci who is generally credited with their invention.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.