Martindale CM51 300A AC Mini Clamp Meter - Martindale Electric This low cost auto ranging clamp meter has a jaw diameter of 27 mm and is useful tool for electricians, maintenance teams and installers. The clamp has a useful Data-hold feature to freeze the displayed value when used in difficult to access locations where the display may be difficult to read. This compact clamp is small enough to fit in a shirt pocket and with resolution down to 10 mA is ideal for residential and commercial applications. Ox Tools Klein CL700 AC Auto Ranging TRMS Digital Clamp Meter With Low Impedance Best Budget Digital Clamp Meter, AC Auto-Ranging 400 Amp - CL120 | Klein Tools - For Professionals since 1857 There is also an auto power off function and the clamp is supplied with a manual, battery and a soft carry case. The CM51 is a high accuracy, current only mini AC clamp meter. RSCM69 Martindale | Martindale CM69 Clamp Meter, Max Current 60A ac CAT II 1000V With UKAS Auto power-off and low battery indicator for efficiency