The 93530-D (German version) Insulation Tester is ideal for single handed operation.

Insulation measurement with four integrated measuring voltages 100 V, 250 V, 500 V and 1000 V, according to DIN VDE 0413 P. 2, EN61557-2
Voltage measurement up to 600 V AC/DC
Automatic voltage detection from 30 V at the measuring inputs
Resistance measurement
Acoustic continuity tester
Integrated measured value storage for 9 measured values
Lock function enables continuous measurements
Zero adjustment in resistance measurement
Display 3 3/4-digit LCD with additional symbols and bar display
Backlight of the display
Auto power-off

2 x test leads, alligator clip, probe tip, handy case, 6 x 1.5 V, type IEC LR6, AA batteries, instruction manual.