• Model: 111.12
• Type: U Clamp Gauge
• Diameter: 50 mm
• Connection Type: 1/8 NPT
• Pressure Range: 0-680 kPa (0-100 PSI)
• Back Connection: Yes

This gauge is likely used for measuring pressure in various industrial or mechanical applications. The 1/8 NPT connection type indicates a standard threaded fitting, and the back connection feature suggests that the gauge can be mounted with the connection at the rear, which is useful for certain installation setups. The pressure range of 0-680 kPa (0-100 PSI) makes it suitable for low to moderate pressure measurements.