Christian Gottlob Hubert After Christian Gottlob Hubert 1784, Russell Collection, Edinburgh. From the eighteen instruments by this maker that have survived the clavichord at Edinburgh is the most compact in size being only 1280mm long. Like the original it has good volume and a responsive action. A compact and sonorous clavichord. Specification: Compass: C – f ‘’’. Fretted from f '- e"' with all a’s & d’s free. Overwound strings in the bass. Dimensions: Approximate excluding lid & base mouldings: Length: 1280mm, Width: 350mm, Height: 115mm. Weight: Approx. 35 Kg.