Simple, robust, easily constructed, stackable sawhorse.
Metric Dimensions SU2014. Model measures 800mm (32") in length and stands about 750mm (30") tall. Fixed with 75mm (3") screws.
Uses common sized timber 100 x 50mm (4" x 2") readily available from local timber merchants.
See here for excellent detailed instructions and plans/video on construction.
I'm aiming to build a few of these soon for the shed. See my blog for progress!