Optical Flat Parallel Set (Micrometer Calibration) PM-40*mm 1965s RARE

Description: 100%Original NEW!!! PM-40 plane-parallel glass plate is used for checking the interference method, the flatness and parallelism of surfaces of surfaces of micrometers (smooth and lever) and clamps (lever and indicator). Plane-parallel glass plates PM-40 have the shape of round straight cylinders with polished end faces that are measuring. Cylindrical surface of the plates shall be brushed, with the exception of sites intended for the application of labels. Specifications PM-40: The measuring range of micrometers and staples from 25 mm to 50 mm.Accuracy class - 2.The actual size deviation is ±10 µm.Deviation of the parallelism of the measuring surfaces - 0.8 microns.The deviation of flatness of the measuring surfaces is ±0.1 µm.Material for the manufacture of plane-parallel plates is glass brand K8 GOST 3514-76.Local flatness - ±0,03 µm.Buttonholes PM-40 - glass brand K8 GOST 3514-76. Dimensions:- diameter - 30 mm;- height - 40 mm.Weight - 73 g Operating conditions: Working temperature - 20±5° C.Relative humidity - less than 80%.Climatic version of PM-40 - O; T.Category placement - 4.2. The size of the plate for calibration of micrometers is determined by the shortest distance between the measuring planes. PM-40 is widely used in tooling industry, in machine engineering, instrument engineering, machinery and many other industries. Note about Feedback: Please leave me feedback when you receive your item and are happy with the transaction. If you have any questions or concerns, PLEASE contact me first before leaving negative feedback. I always strive to resolve any problems and make our customers happy. Note About Delivery Time:I try to send your item as soon as possible, Normally no later than 3 days after payment is received. arrive time is contingent on the carrier.

Price: 99.99 USD

Location: Balti, Balti

End Time: 2024-11-22T13:46:04.000Z

Shipping Cost: 29.99 USD