Technical Specifications from Radiomuseum.org: Power type and voltage: Alternating Current supply (AC) / 110; 125; 145; 200; 220; 245 Volt Material: Metal case Model: Oscilloscope GM5639 - Philips; Eindhoven tubes Shape: Tablemodel, with any shape - general. Dimensions (WHD): 215 x 300 x 450 mm / 8.5 x 11.8 x 17.7 inch Notes: X-Y Oscilloscope. Net weight (2.2 lb = 1 kg): 14 kg / 30 lb 13.4 oz (30.837 lb) Price in first year of sale: 1,630.00 DM This oscilloscope is lighting up, all tubes are present (about 20), but it probably needs to be recalibrated and tested thoroughly. There is some minor damage to a few knobs. I found that many of the electrolytic capacitors had already been replaced. This item is intended for collectors or specialists. Given the age of the product, its operation requires attention and caution in handling. There is no guarantee for long-term operation. All photos are part of the description. The items will be properly packed and sent via Smart Shipping with insurance.