von Gerke, Barbara: Crafting Potency
Sowa Rigpa Artisanship across the Himalayas
Crafting Potency investigates the intricate interweaving of knowledge, practice, and materials through which potency is sculpted in Sowa Rigpa (Tibetan medicine). Informed by Tibetan medical literature and extensive fieldwork with practitioners (amchis) from Ladakh, Dharamsala, and Kathmandu, the authors explore how potency is understood and manipulated in the making of multi-ingredient medicines. Taking inspiration from Tim Ingold's ecologically attuned phenomenology and Pamela Smith's concept of "artisanal epistemologies," potency is presented as efficacy-in-becoming-a fluid capacity sculpted and layered through skilled artisanship, ritual, and environment, rather than a fixed property of stable substances. Highlighting the deep immersion of amchis in their social, ecological, technical, and spiritual lifeworlds-and exploring what changes when knowledge is transmitted through institutional rather than lineage-based training-the book contributes nuanced practice-based perspectives to the anthropology of craft and the history of science.
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Size chart
Bracelets, bangles, bangles, necklaces
| age | Wrist circumference |
|
Newborn |
9 - 12 cm |
|
6 months - 3 years |
12 - 14 cm |
|
4 - 10 years |
14 - 15 cm |
|
Teenager, ladies (XS) |
15 - 16 cm |
|
Ladies (M) |
16 - 17 cm |
|
Ladies (XL) |
18 - 19 cm |
|
Men (M) |
18 - 20 cm |
|
Men (XL) |
21 - 22 cm |
Brief instructions for measuring wrist size:
Loosely wrap a measuring tape or string around your wrist where you want the bracelet to sit. Make sure that it fits snugly but does not cut in. Read the circumference directly from the measuring tape or measure the length of the cord with a ruler.
Note:
The length of the bracelet may be 1 cm to 3 cm longer than the measured wrist circumference, depending on your taste.
The length of the bracelet may be 1 cm to 3 cm longer than the measured wrist circumference, depending on your taste.
Finger rings
Ring size conversion table
| EU / CH | US size | UK size | Inner diameter (mm) | Inner circumference (mm) |
|---|---|---|---|---|
| 48 | 4.5 | I | 15.3 | 48.0 |
| 49 | 5 | J | 15.6 | 49.0 |
| 50 | 5.5 | J½ | 15.9 | 50.0 |
| 51 | 6 | K | 16.2 | 51.0 |
| 52 | 6.5 | L | 16.6 | 52.0 |
| 53 | 7 | M | 16.9 | 53.0 |
| 54 | 7.5 | N | 17.2 | 54.0 |
| 55 | 8 | O | 17.5 | 55.0 |
| 56 | 8.5 | P | 17.8 | 56.0 |
| 57 | 9 | P½ | 18.2 | 57.0 |
| 58 | 9.5 | Q | 18.5 | 58.0 |
| 59 | 10 | R | 18.9 | 59.0 |
| 60 | 10.5 | S | 19.2 | 60.0 |
| 61 | 11 | S½ | 19.6 | 61.0 |
| 62 | 11.5 | T | 19.8 | 62.0 |
| 63 | 12 | U | 20.3 | 63.0 |
| 64 | 12.5 | V | 20.6 | 64.0 |
| 65 | 13 | W | 20.9 | 65.0 |
| 66 | 13.5 | X | 21.3 | 66.0 |
| 67 | 14 | Y | 21.6 | 67.0 |
| 68 | 14.5 | Z | 21.8 | 68.0 |
| 69 | 15 | Z+1 | 22.1 | 69.0 |
| 70 | 15.5 | Z+2 | 22.5 | 70.0 |
Size categories:
Women:
- Very small: 48-50 (children/very petite)
- Small: 51-53 (petite hands)
- Standard: 54-56 ← most common sizes
- Large: 57-59 (strong hands)
- Very large: 60-62
Men:
- Small: 57-59 (narrow hands)
- Standard: 60-63 ← most common sizes
- Large: 64-66 (strong hands)
- Very large: 67-70 (very strong hands)
Brief instructions for measuring ring size:
Method 1: Measure the inner diameter of a suitable ring
- Take a ring that fits well.
- Place it on a ruler and measure the inside diameter (from one inner edge to the other).
- Compare the diameter with the table to determine the ring size.
Method 2: Measure the circumference of your finger
- Take a thin strip of paper or thread.
- Wrap it around the part of the finger where you want the ring to sit (not too tight).
- Mark the point where the ends meet.
- Measure the length of the strip in millimeters. This is the inner circumference.
- Find the right size in the table.
Tips:
- Measure the finger size in the evening, as fingers swell slightly during the day.
- If you are between two sizes, choose the larger size.
- Make sure that the ring fits over the knuckle.
