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These are some common tools used to work on this device. You might not need every tool for every procedure.

Background and Identification

The Petzl E03 050 Headlamp is an incandescent headlamp manufactured in France by Petzl during the late 80's & early 90's. The headlamp contains a single 3V incandescent bulb housed in a clear lens and reflector assembly. The bulb is powered by two AA batteries. The lens is attached to an articulated mount that utilizes an elastic band to attach the headlamp to the user’s head.

Identification Marks

“Micro Water Resistant On Off Brignoud France Brevets France Etranger REF E03 050 Petzl ZI Crolles 38190” serve as delineating marks on the rim of the lens.


Any problems encountered with this device can be diagnosed using the Petzl E03 050 Headlamp Troubleshooting Page.

Additional Resources

Petzl Website

How Lightbulbs Work

Exhibit in The Scottish Mountain Heritage Collection

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