Size Guide
Choosing the perfect ring size is an essential part of the Hardy Brothers experience.
Our guide below will help you find the most accurate fit, ensuring comfort, elegance, and a seamless expression of luxury.
| Australian Size | Inside Circumference (mm) |
|---|---|
| H | 46.0 |
| H ½ | 46.6 |
| I | 47.2 |
| I ½ | 47.9 |
| J | 48.3 |
| J ½ | 49.3 |
| K | 49.6 |
| K ½ | 50.3 |
| L | 50.5 |
| L ½ | 51.5 |
| M | 51.8 |
| M ½ | 52.5 |
| N | 53.1 |
| N ½ | 53.8 |
| O | 54.5 |
| O ½ | 54.8 |
| P | 55.7 |
| P ½ | 56.4 |
| Q | 57.1 |
| Q ½ | 57.6 |
| R | 58.4 |
| R ½ | 59.1 |
For the most precise fit, we invite you to visit a Hardy Brothers boutique where our specialists will personally measure your finger and ensure your chosen piece is crafted to perfection.

Hardy Brothers uses standard Australian ring sizes.
| Australian Size | Inside Circumference(mm) |
| M 1/2 | 55.7 |
| N | 57.0 |
| N 1/2 | 58.3 |
| O | 59.6 |
| O 1/2 | 60.9 |
| P | 62.2 |
| P 1/2 | 63.5 |

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Subtract the case size of the timepiece from your wrist measurement
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Enquire about SPEAKE MARIN RIPPLES SKELETON 40.30MM
Details
| Vendor | Speake Marin |
| Metal | Stainless Steel |
| Case Diameter |
Product Details
Speake Marin's heritage of excellence continues with the Ripples Skeleton. This stunning timepiece combines traditional craftsmanship with cutting-edge technology, creating a truly exceptional timepiece that is both timeless and modern. Introducing the ultra-thin SMA07 automatic skeleton calibre, a marvel at just 3.25 mm thick. Housed in the iconic "La City" ultra-thin case (only 6,3 of thickness) and crafted from premium 904L stainless steel.
The skeletonized dial offers a captivating view of the intricate mechanics, while hand-flamed blue hour and minute hands add a touch of artisanal elegance. With its high-frequency balance-wheel at 36,000 VPH, the Ripples Skeleton mark a new chapter in Speake Marin’s legacy.





























