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 |

Cut out the length chart
Measure your wrist
Subtract the case size of the timepiece from your wrist measurement
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Measure this box to check accuracy


Enquire about Bremont Altitude Automatic 39mm Watch ALT39-DT-SS-SI-L-S
Details
| Vendor | Bremont |
| Metal | Stainless Steel |
Read more information regarding our Product Disclaimers.
Product Details
The MB format reinterpreted as an ultra-durable tool watch for everyday wear.
The dial language, case contours and impervious engineering of the MB, now
incorporated in a streamlined timepiece ideal for all situations.
The 39mm Trip-Tick case, featuring a single crown, is crafted from high-grade
904L stainless steel, meaning superior corrosion resistance and strength, with a
centre barrel in black DLC-coated stainless steel. The highly reliable BB14 calibre
is again used, protected as ever by a shock-absorbing inner mounting and antimagnetic shielding.



























