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Introduction 
The Fluke 175, 177, and 179 are battery-powered, True-rms 
multimeters (the Product) with a 6000-count, 3 3/4-digit display 
and a bar graph. This manual applies to all three models. All 
figures show the 179. 
How to Contact Fluke 
To contact Fluke, call one of the following telephone numbers: 
•  Technical Support USA: 1-800-44-FLUKE (1-800-443-5853) 
•  Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853) 
•  Canada: 1-800-36-FLUKE (1-800-363-5853) 
• Europe: +31-402-675-200 
• Japan: +81-3-6714-3114 
• Russia: +8-495-664-75-12 
• Singapore: +65-6799-5566 
•  Anywhere in the world: +1-425-446-5500 
Or, visit Fluke's website at www.fluke.com. 
To register your product, visit http://register.fluke.com. 
To view, print, or download the latest manual supplement, visit 
http://us.fluke.com/usen/support/manuals. 
Safety Information 
In this manual, a Warning identifies conditions and procedures 
that are dangerous to the user. A Caution identifies conditions 
and procedures that can cause damage to the Product or the 
equipment under test. 
XW Warning 
To prevent possible electrical shock, fire, or personal 
injury: 
•  Read all safety information before you use the 
Product. 
•  Carefully read all instructions. 
•  Use the Product only as specified, or the protection 
supplied by the Product can be compromised.