Soviet vintage pressure gauge device (mercury sphygmomanometer) for sale. Description: For sale is an original Soviet-era mechanical pressure gauge device (mercury sphygmomanometer) in its original factory metal case. The item is well-preserved, the body and internal mechanism are in good condition visually (see photos). Purpose: Ideal for collectors of vintage items, as a medical theme prop, or for retro-style decor. Price: 50₾ (price negotiable) Contact: