Both the clock and barometer can be purchased with or without the optional incorporated fluid dampened inclinometer. To calibrate the movement in either the clock or barometer, twist the case 1/8 turn to remove the case and leave the back plate on the bulkhead. This feature is also convenient should you want to remove your instruments for storage or anti-theft reasons.

• Precision quartz movement which is accurate to +/- 15 seconds a month
• Waterproof to a depth of 100 feet!
• One AA battery is included

  Size: Dial: 3-3/4". Base: 5-7/8". Depth: 2-1/2"