Socket-See-PDIT360-Part-P-Insulation-Tester-Socket-See-SOC-PDIT360-P-The-Socket-&-See-DIT-360-Plus-digital-insulation-continuity-Tester-with-selectable-250-500V-test-is-ideal-for-anybody-involved-in-insulation-testing-for-Part-P-or-the-17th-Edition-wiring-regulations-This-low-cost-Socket-&-See-PDIT-360-insulation-continuity-tester-comes-supplied-with-a-carry-case-P-Socket-See-PDIT360-Part-P-Insulation-Tester