Parallel flat rule knowledge

Parallel flat rule knowledge

Parallel flat ruler : manufactured according to JB/T7977-99 standard, material HT250, work surface adopts scraping or precision grinding process, used for inspection of machine tools in inspection of unevenness and non-straightness. The two working faces are matched with block gauge and micrometer. Level Instrument and other instrument inspection, different heights, the parallel and non-joint rails of the two guide rails, parallel flat feet and can be matched with cast iron squares , to check the verticality of the two parts that can not be inspected with a square ruler , also applicable to equipment Installation and inspection. Parallel flat feet are a type of cast iron flat ruler . For details, please contact: http://ZTPCXL.html

　　

Parallel flat gauge size mm	Working plane straightness or flatness			Parallelism between working faces			Side to face perpendicularity
	Precision level um
	0	1	2	0	1	2	0	1	2
500×35	3	6	12	4.5	9	18	15	30	60
750×40	4	8	15	6	12	25	20	40	80
1000×50	5	10	20	7.5	15	30	25	50	100
1500×70	7.4	15	30	10	20	40	37	75	150
2000×90	9	18	36	13.5	27	54	45	90	180
2500×90	11	twenty two	44	16	32	65	55	110	220
3000×100	13	26	52	19.5	39	78	65	130	260
3500×100	15	30	60	twenty two	45	90	75	150	300

MgF2 Window

Magnesium Fluoride (MgF₂) Windows offer excellent broadband transmission from the deep-UV to the mid-infrared.

MgF₂ is a rugged material resistant to chemical etching, laser damage, and mechanical and thermal shock.

MgF2 exhibits excellent broadband transmission from 120 nm to 8 μm , from the deep UV to the mid infrared. This makes them a good choice for UV radiation sources and receivers as well as for use at the Hydrogen Lyman-alpha line. They are often used as UV viewpoints, and are a good option for UV polarizers and excimer laser applications. It has a high transmittance between 120 nm and 8 µm, and between 0.4-5.0 µm transmits over 90%.
MgF2 has a melting point of 1255 degrees Celsius. It has a density of 3.177 g/cm3, and a tetragonal crystal type. Our Optical Windows are typically oriented with the round surfaces perpendicular to the c-axis of the MgF2 crystal to minimize birefringence. Custom random cut MgF2 windows can be manufactured on request.

MgF2 is the only optical material which combines a wide spectral transmission band with birefringence. This birefringence means that the refractive index depends on the polarization and propagation direction of light. Because of birefringence, a MgF2 window can exhibit double refraction, so that a ray of light will be split by polarization into two rays with different paths.

• Excellent Transmission from 120nm to 7μm
• Rugged and Durable
• Resistant to Chemical Etching

Mgf2 Window,Magnesium Fluoride Windows,Single Crystal Mgf2 Lens,Mgf2 Opticl Window

Changchun Ruiqi Optoelectronics Co.,Ltd , https://www.ruiqi-optics.com