Stahlwerk Mark ME 1b
| Type | Werknr. | Registration | History |
| ME 1b |
| 1 seated sportplane, development of the R III | |
| Engine | 1 Mark M 3, 40 hp |
| Dimensions | Length 5.17 m, height 2.03 m, wingarea 12.90 m2 |
| Weights | Empty 252 kg, fuel 30 kg, oil 3 kg, crew 75 kg, flying weight 360 kg |
| Loads | Wingload 28 kg/m2, powerload 9 kg/hp, 3.1 hp/m2 |
| Performance | Max speed at sea level 125 km/h, cruising speed at sea level 110 km/h, service ceiling 3000 m, range 300 km, landing speed 45 km/h, required starting field 35 m, landing 25 m |