Hygrometer Insert 1 7/16" 763 Series Ronda this case opener is designed

this case opener is designed to open and close watch cases with screwed-on backs

Silvana 7010

Number of teeth 71

60 mm and its smallest portion is 0

60 mm thick rectangular shape

Hygrometer Insert 1 7/16" 763 Series Ronda this case opener is designedHygrometer Insert 1 7 16" is a Hygrometer fit up movement with a white dial and black numbers. This insert uses a Seiko PC21 watch movement, and is supplied with a battery installed. The case is supplied with a gasket to hold the bezel into the hole. This model has a crystal glass lens, stainless steel back cover and alloy bezel. The outside diameter of the bezel is 36. 5 mm (1 7 16"), fits into a hole 34. 9 mm (1 3 8") and has a total depth 9. 5 mm