Grace F-9 E Ruby

Brand: Grace

The Grace F-9 E Ruby is a vintage wristwatch originally produced in the early 1970s. The F-9 series of watches by Grace Sport-O-Matic Limited featured automatic movements, screw-back cases, and broad arrow hands. "E" in the watch's name indicates that it has a date function, while "Ruby" refers to the ruby bearing used in the automatic movement to improve wear resistance and reduce friction. The Ruby model is considered a collectible timepiece by watch enthusiasts due to its unique features and design.

• Type: Moving Magnet
• Output Voltage: mV
• Freq Response: 10Hz - 45kHz
• Tracking Force: 0.5 - 2.0 g
• Mass: 6 g
• Channel Separation: 28 dB
• Channel Balance: 0.5 dB
• Load Impedance: 47k Ω
• Output Impedance: 1700 Ω
• Stylus:
• Stylus Tip: 0.2 x 0.8 mil Elliptical
• Cantilever: Synthetic Ruby
• Dynamic Compliance: x 10-6cm/Dyne
• Static Compliance:
• Price: