Check the listing for details. Threaded Dust Plug / Protection Cap for Microscope Nosepiece or Objective Turret. Condition: New. Listed at 3.56 USD. ONE Threaded Dust Plug / Protection Cap for Microscope Nosepiece or Objective Turret It is vital to keep your valued microscope free from dust in order to achieve its optimized optical performance. With the help one of my valued clients, an experienced microscopist, I managed to get these dust caps with a reasonable price. I hope someone will find them useful. The sale is for one screwed dust cap for nosepiece holes. Almost all nosepiece holes have a standard RMS thread of 20mm in diameter expect some student microscope or children’s microscope. One picture show the threaded dust cap on a nosepiece I am selling separately. Delivery: The item will be posted to you the same day by Royal Mail First Class service if your payment is received before 12pm. Otherwise, it will be posted the next day. Please note that, for all items where payment is received over a weekend, items will be posted the following Monday. International Buyers please see postage details. Payment: If possible please pay into my bank account directly by online banking and I will send you my bank details after the auction. I also accept personal cheque, bank draft and postal order if this more convenient for you. Buy from a UK PowerSeller with more than 32,000 happy customers and buy with total confidence!