Electric inspection unit using anisotropically electroconductive sheet

An electric inspection unit, comprising:

• a plurality of electrodes;
• and
• an anisotropically electroconductive first sheet having a first major surface and a second major surface opposing the first major surface, said first sheet being placed so as to be present between some of the electrodes and a base board to be inserted into the unit when the base board is electrically inspected,
• wherein the first sheet has a plurality of electroconductive first regions extending in the direction of thickness of the sheet, wherein each of the first regions extends from the second major surface to the first major surface, said first regions are arranged so as to be insulated from one another by second regions, said second regions comprising insulating, elastic, high-molecular-weight substance, each of the electroconductive first regions comprising a bump region forming a bump in the first major surface of the sheet, each of said first regions comprising said insulating, elastic, high-molecular-weight substance and electroconductive particles, said electroconductive particles densely fill the insulating, elastic, high-molecular-weight substance in the first regions.