{"product_id":"spectrometer-standard","title":"Spectrometer, Standard","description":"Reads to 6 minutes of arc (0.1°) 170 mm diameter metal scale graduated 360° x 1°, independently rotatable, with locking screw, vernier attached to the telescope reads to 0.1° (6 minutes of arc). The collimator is mounted on a fixed pillar, with an achromatic objective of 150 mm focal length and 21 mm aperture, and has an adjustable slit 6 mm long. The telescope is on a movable pillar, with a fine adjustment screw, an achromatic objective of 170 mm focal length, 21 mm aperture, Ramsden eye-piece, and glass crosswire graticule. Both collimator and telescope have spiral focusing systems and axis adjusting arrangements. The table has 3 leveling screws, with lines marked to assist prism placement. With prism and grating holders, one small screwdriver, and one Tommy bar for axis adjustment. Without prism.","brand":"Supertek Science","offers":[{"title":"Default Title","offer_id":49975056400661,"sku":"SPSPH30738","price":431.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/PH30738.jpg?v=1781497327","url":"https:\/\/unitedsupplycorp.com\/products\/spectrometer-standard","provider":"United Supply Corp.","version":"1.0","type":"link"}