Clamp meters are color coded in safety-conscious scheme

Agilent U1210 series handheld clamp meters provide up to 1000A of high-current measurement capability for cables up to 2 inches in diameter. Product range is updated in vivid orange color to provides greater visibility and is in line with conventional color coding that indicates caution in typical industrial settings. Agilent U1240B and U1250B series digital multimeters (DMMs) and U1210A clamp meters carry CAT III 1000 V, CAT IV 600 V safety ratings.

http://www.agilent.com