Specifications Overview:
The document provides technical specifications for combined pneumatic toggle clamps, specifically models 691-1, 691-2, and 691-3. Each model is detailed with dimensions and performance metrics.

Dimensions:
Each model is listed with specific measurements for various parts labeled A through Z, including piston diameter. For example, model 691-1 has a piston diameter of 25 mm, while model 691-3 has a piston diameter of 40 mm.

Performance Metrics:
The document outlines exerting force (F1, F2), holding capacity (F3, F4), applied force (Fi), and air consumption (Vn) at 6 bar pressure for each model. For instance, model 691-1 has an exerting force of 300 N and an air consumption of 0.25 dm³.

Weight and Pressure:
The weight of each model is provided in grams, with model 691-1 weighing 641 grams. All models operate at a pressure of 6 bar.

Additional Features:
The pneumatic cylinders are described as double acting, magnetic, and cushioning, enhancing their operational efficiency.