There are no cracks or repairs to any of the ebonite. Base dimensions = 8 x 4.5 Inches. The item "WIMSHURST MACHINE (ELECTROSTATICS) 7 Inch Plates Miniature Working FINE" is in sale since Tuesday, July 17, 2018. This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "houseofvega" and is located in Newcastle Under Lyme, Staffordshire.This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.