Electronic and Electrical Test Equipment Testing for faulty grounds or the insulation resistance of electrical conductors with either a digital or analog ground (earth) and insulation resistance tester is a preventative measure that can prevent unexpected damages and loss of power. For professional electricians and work crews, an earth and an insulation resistance tester are tools needed in our trucks and tool bags. We offer free shipping on all orders shipped in the continental USA.   Safety Tips   Ground (Earth) and Insulation Resistance Testers   Quan. Description Price 1. Martel C-360 Insulation Tester Item No. MC-360 $359.99 $389.95 2. Summit ERT 1500 Earth Resistance Tester Item No. BE-ERT1500 $299.99 $349.00 3. Summit ERT 1000 Earth Resistance Tester Item No. BE-ERT1000 $267.99 $299.00 4. Summit SDIT 300 Digital Insulation Tester Item No. BE-SDIT300 $199.99 $219.00 5. Summit SAIT 25 Insulation Tester Item No. BE-SAIT25 $139.99 $159.00 All prices in US Dollars Also See Our featured Products   Click Here To View Our Product Line   Don't like to shop online? Call 1-800-921-0447 ext.702 to order over the phone. OUR PRODUCTS ARE PROFESSIONAL GRADE We accept money orders, cashier's, business and personal checks. All orders paid for by check will be shipped after your check has been processed by our bank.

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