{"product_id":"microscope-eyepiece-reticules-graticules-ng2-original-porton-globes-and-circles","title":"Microscope Eyepiece Reticules (Graticules) NG2 Original Porton Globes and Circles","description":"\u003ch1\u003eMicroscope Eyepiece Reticules (Graticules) \u003c\/h1\u003e\n\u003ch1 class=\"text-secondary\"\u003eNG2 Original Porton Globes and Circles\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEyepiece Reticle with central Rectangle and Globes\/Circles\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe circle areas of the Porton reticles increase with Root 2 progression as do the divisions on the right hand side of the rectangle. These divisions are numbered for convenience. Rectangle size is 4.5mm x 2.025mm. The specimen is racked on the mechanical stage of the microscope and traverses are taken right across the deposit sizing all the particles encountered.\u003cbr\u003e\u003cbr\u003eReference: K.R.May, Journal of Scientific Instruments Vol. 22 Oct 1945. “The Cascade Impactor.” An instrument for sampling coarse aerosols.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"text-primary\"\u003eGlass Type and Thickness\u003c\/span\u003e\u003cbr\u003eSoda Lime 1.5mm thick\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"text-primary\"\u003eDiameter Tolerance\u003c\/span\u003e\u003cbr\u003e+0\/-0.1mm\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"text-primary\"\u003eOrientation\u003c\/span\u003e\u003cbr\u003eCorrect reading through glass\u003c\/p\u003e","brand":"Auckland Scientific","offers":[{"title":"16mm","offer_id":58332895215941,"sku":"01B16251","price":138.93,"currency_code":"GBP","in_stock":true},{"title":"19mm","offer_id":58332895248709,"sku":"01B19251","price":138.93,"currency_code":"GBP","in_stock":true},{"title":"20.4mm","offer_id":58332895281477,"sku":"01B20.4251","price":138.93,"currency_code":"GBP","in_stock":true},{"title":"21mm","offer_id":58332895314245,"sku":"01B21251","price":138.93,"currency_code":"GBP","in_stock":true},{"title":"23mm","offer_id":58332895347013,"sku":"01B23251","price":138.93,"currency_code":"GBP","in_stock":true},{"title":"24mm","offer_id":58332895379781,"sku":"01B24251","price":162.96,"currency_code":"GBP","in_stock":true},{"title":"24.5mm","offer_id":58332895412549,"sku":"01B24.5251","price":162.96,"currency_code":"GBP","in_stock":true},{"title":"25mm","offer_id":58332895445317,"sku":"01B25251","price":162.96,"currency_code":"GBP","in_stock":true},{"title":"26mm","offer_id":58332895478085,"sku":"01A26051","price":162.96,"currency_code":"GBP","in_stock":true},{"title":"27mm","offer_id":58332895510853,"sku":"01B27251","price":162.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1066\/1930\/6309\/files\/ng2_ce99c7b0-3f1f-474a-bf01-f9e547fc586f.jpg?v=1782074472","url":"https:\/\/auckland-scientific.co.uk\/products\/microscope-eyepiece-reticules-graticules-ng2-original-porton-globes-and-circles","provider":"Auckland Scientific Ltd","version":"1.0","type":"link"}