METR

The METR improves on the standard tape measure by removing the measuring "blade" from the equation. The metal measuring tape on industry-standard measures is  awkward, can only measure straight distances, and wears out with regular use, making measurements lose accuracy over time. The spring actuator within the devices can de-temper with exposure to the sun, varying their accuracy wildly in outdoor applications. METR solves these issues by eliminating the blade and replacing it with a wheel and easy to read LCD display. Though digital measures that operate similarly to the METR exist on the market, none are designed specifically for proper carpentry or contracting work -- the METR is. 

The METR works off of a scrolling wheel that contains magnets that trip a switch located in the product's body, allowing for easy, fast, and accurate measuring. The METR is charged off of a USB-C and uses a LiPo battery for long-lasting battery life and ease of access for all users. 

Many of the design decisions on the METR are a result of two phases of user testing and anthropometric measurements of the hand. It was designed from the ground up to be comfortable for those with large hands and small hands to hold and use effectively, no matter the circumstance. The single button makes operation easy and intuitive for all users, and its location was determined by anthropometric research. 

3D model designed in Rhino 7 and rendered in Keyshot 11. Physical model printed in resin on an Elegoo Mars 2 Pro.