Check the listing for details. Vintage Demonstration TUNING FORK with Point Educational Physics Aid USSR 1970. Condition: New. Listed at 16.99 USD. An excellent copy for the collection of teaching aids of the USSR. Vintage Soviet educational device "Tuning fork with a point" complete with a manual in Russian and a factory packaging box. A physics textbook for high school. Designed to demonstrate vibrations of a tuning fork by recording on a glass plate covered with soot (sand). Frequency 20-50Hz Made in the USSR at the Moscow plant "FIZELEKTROPRIBOR" No. 4 in 1971. Material-steel. dimensions - 300x26х12 mm (11.7x1.0х0.5 inches).Weight-128 grams. Photo are part of the description. Look carefully. Dear buyers. Look in my auctions for other Soviet vintage Teaching Aids in physics for high school students. I combine shipping. Feedback Policy: If you are pleased with your purchase, please leave us positive feedback once receiving the item, and we will return the feedback upon you. If you have any problem with the outcome of the transaction or product, please don't respond with negative feedback before contacting us. Contact Us: Please contact us if you have any questions about items. Worldwide shipping. You can sell to customers in Central America and the Caribbean, South America and Oceania, by agreement on the cost of delivery parcels. The cost of delivery will be more expensive. Write and we can agree. Item ships within 1 business day after the receipt of the payment. The item will be shipped by registered airmail by Ukrainian Postal Service. Shipping takes 14-24 business days to Europe, USA, Canada, Australia and Japan. Money back policy: 30 days guarantee.Despite the hostilities on the territory of Ukraine, the post office is working, but delivery times may increase.