Britain did not convert to the Gregorian calendar until 1751, when 11 days had to be added to their dates to get the Gregorian dates. In 1639 they were 10 days behind the Gregorian calendar.
Re: Klein Tools Or Greenlee. Both Klein and Greenlee are TOP quality tools with a niche market. They have a few common tools (such as rabis and ratchet cutters) and either is worth buying over pretty much anything else. They are not really direct competitors. I prefer Knipex for most hand tools except linemans.
The Klein Tools Test Lead Set features removable alligator clips that attach to wires and other conductors. The lead set is intended for use as replacement test leads with meters and clamp meters that have standard, banana-type input jacks. Use as replacement test leads with meters and clamp meters that have standard, banana-type input jacks. Functional with Klein meter models: MM100, MM200, MM1000, MM2000, CL100, CL200, CL1000, CL2000, CL3000 and CL3100. Removable alligator clips attach to wires and other conductors.