metal 23 sided polyhedral prism

{"cid":"91223678","title":"Metal 23 Sided Precise Polyhedral Prism Regular Polygon Angle Standard Instrument","imgUrl":"https:\/\/img.chinax.com\/nimg\/06\/81\/c473736ab6a1d5d9c4f9c7548889-200x200-1.jpg","attrs":{"Price":"3000~5000 USD","Brand Name":"SPR-ing","Minimum Order Quantity":"1 piece","Delivery Time":"1~3 weeks","Payment Terms":"L\/C,T\/T","Supply Ability":"500\/month","Packaging Details":"Carton","Place of Origin":"Shenzhen","Refractive Index":"1.5","Application":"Optical Experiments","Prism thickness":"17-20mm","Material":"Glass","Flatness of working face":"Grade 0 (Grade II): \u2264 0.03um","Excircle diameter":"\u03c6 80-\u03c6 150mm","Rotating center aperture":"\u03c625mm","Surface roughness of datum plane":"Ra \u2264 0.05 um"}}

{"cid":"91222036","title":"Metal Vintage Telescope Antique Binocular Glasses for Opera 3x25 Exit Pupil 8.3mm","imgUrl":"https:\/\/img.chinax.com\/nimg\/10\/29\/1b2f97cfc71e2c8309e631a4cf3d-200x200-1.jpg","attrs":{"Price":"$25.00\/pieces 5-999 pieces","Brand Name":"KANDAR","Model Number":"3X25","Minimum Order Quantity":"5 pieces","Warranty":"3 years","Place of Origin":"Beijing, China","Material":"Rubber and Aluminum","Color":"Optional","Magnification":"3x","Objective diameter":"25mm","Field of view":"315ft\/105m","Eye Relief":"16mm","Exit Pupil":"8.3mm","Weight":"6.7oz.\/190g","Certification":"CE\/RoHS","Packaging Details":"Neutral Packing","Port":"SHANGHAI,GUANGZHOU,TIANJIN,QINGDAO,NINGBO,BEIJING,HARBIN","Supply Ability":"1000 Set\/Sets per Week"}}