 |
Metrological standard-prove plates
flat glass
PI60, PI60V, PI80, PI100, PI120
The flat glass plates are intended for checking by interference methods the lap-ability and planarity of the measuring planes of plane-parallel end standards of the metre, gauges, measuring instruments and tools. These plates are widely used in various applications, for example, in instrument making, tool making, mechanical engineering and many other industries. The plates are produced in two modifications: lower and upper. The lower (bearing) plates are used for checking the lap-ability and planarity of the measuring surfaces of end standards of the metre, gauges, measuring instruments and tools. The upper plates are used for measuring plane-parallel end standards of the metre by the interference method.
| diameters of lower plates | mm | 60, 80, 100, 120 |
| diameter of upper plates | mm | 60 |
| deviations of working surfaces from planarity of plates of the 2nd class of accuracy: | ||
| PI60, PI60V, PI80, PI100 | - | 0.3 of interference band |
| PI120 | - | 0.4 of interference band |
| local deviations from planarity of working surface, not over: | ||
| for lower plates | - | 0.1 of interference band |
| for upper plates | - | 0.3 of interference band |
| plate | overall dimension (mm) | weight (kg) |
| PI60 | D60x20 | 0.143 |
| PI60V | D60x40x20 | 0.136 |
| PI80 | D80x25 | 0.253 |
| PI100 | D100x25 | 0.395 |
| PI120 | D120x30 | 0.569 |
< back to page [Metrological plates] >
< back to page [Testing instruments] >
|
JSC 'LZOS' 140080, Lytkarino, Moscow region, Russia, H.1, Parkovay Str. phone/fax: (007-495) 552-32-95 / 552-17-90 e-mail: office@lzos.ru |
:: news :: about company :: company history :: articles :: banners ::
:: optical glass and materials :: fibre optics components :: medical equipment ::
:: microscopes and accessories :: astronomical optics and mirrors ::
:: biological shielding systems :: special purpose devices :: testing instruments ::
:: camera lenses :: enlarger lenses :: spotting scopes :: night vision devices ::
:: lens adapters :: opera glasses :: glass souvenirs :: children's toys :: household mirrors ::
