This project reimagines the process of measuring ring size for an engagement through a discreet, intuitive, and user-friendly design that preserves the element of surprise. It enables individuals to measure a partner’s ring size accurately without revealing their intentions, supporting to create a meaningful proposal.
Survey Findings
82.5% of participants indicated that they expect their partner to plan a surprise proposal
User Research
To understand the user needs when measuring the partner's ring size discreetly
User Persona
User Journey
The Measurement Unit
Define the appropriate measurement system based on current ring size units.
Ring Size Chart
The standard ring size is ring diameter, and there are six different units depending on countries or regions. The average U.S. ring size of ring finger in the United States falls between 4 to 8.
The Measurement System
This defined formula helps to figure out the ring size from the width of ring finger. (Formula: Knuckle Width × 0.95 = Ring Finger Size in mm (round to the nearest tenth))
Design Statement
Support to measure ring finger size in a secret and accurate way
Moodboard
Ideation and 3D mockups






CMF
Gift Card
Details
Exploded View
Instructions

























