J. Berthaud Fils manufacturer in Lyon, tensiometer, second half of the 19th century, instrument for measuring the elasticity of threads, graduation in millimeters. The mechanism in working condition is contained inside a walnut and blackened wood case, 22 x 12,5 cm.
We use cookies to provide you with a better browsing experience, perform site traffic analysis, and deliver content and advertisements most relevant to your interests.
Cookie management:
By allowing these cookies, you agree to the deposit, reading and use of tracking technologies necessary for their proper functioning. Read more about our privacy policy.