PCE-Oe is a handheld refractometer used by winemakers to determine the sugar content of unfermented grape juice to predict the alcohol content of wine. This portable pocket winemaker's refractometer has a triple scale to allow the user to view all three measurement parameters at once.

- Measurement range: 0 ... 90 °Oe, 0 ... 44% Brix /
  sac, 0 ... 25 KMN / babo
- Resolution: 1 °Oe, 0.2% Brix, 0.2 KMN
- Accuracy: ±2 °Oe, ±0.2% Brix, ±0.5 KMN