Optical Components-> Optical Instruments

1 2 3 4 [5] 6 [«Back ||Next »]   Click to Enlarge OBJECT SCREEN (LSE) A circular metal screen 75mm diameter with 10mm central aperture covered with 1.5mm mesh wire gauze. Mounted on a 6mm brass rod thus giving an optical centre height of 80mm approx. See Enlarge Click to Enlarge IRIS DIAPHRAGM (LSE) A metal screen 75mm diameter, with an adjustable iris diaphragm mounted in the centre, giving a maximum aperture of 6mm. The disc is mounted on a 6mm brass rod & the optical centre height is 80mm approx. See Enlarge Click to Enlarge ADJUSTABLE SLIT (LSE) Metal screen, with 12.5mm central aperture. A screw controlled, spring loaded precision slit is mounted on one side of the disc, the adjustment drive being arranged so that the slit can not be over tightened. The slit has levelled jaws with brass, dovetail section slides, & provides a maximum slit opening of 4mm approx. with a useful length of 10 to 12mm. Mounted on a standard 6mm diameter brass rod, the optical centre height is 80mm approx. See Enlarge Click to Enlarge MICROMETER SLIT (LSE) The micrometer slit is as per Cat. No. 10767 but has a heavier screw thread, 0.5mm pitch x 6mm diameter, carrying a drum, which is divided into 50 divisions giving a reading of 0.01mm. An index is provided with a 5mm scale divided in 0.5mm divisions. See Enlarge Click to Enlarge CANDLE HOLDER (LSE) A cylindrical 20mm internal diameter x 22mm deep painted matt black is mounted coaxially upon a polished brass rod 35x6mm diameter. See Enlarge Click to Enlarge GROUND GLASS SCREEN (LSE) In metal frame 100x75mm with a central aperture 63mm dia. Mounted on a 6mm brass rod giving an optical centre height of 80mm approx. Overall 130mm height. See Enlarge Click to Enlarge LAMP (LSE) A 240V 15W white B.C. Pygmy lamp in a conical lamp house 70mm long x 65mm diameter. Mounted on a 6mm brass rod giving an optical centre height of 80mm approx. Supplied complete with 1.5 meter of twin flex. See Enlarge Click to Enlarge LENS HOLDER (LSE) Consisting of metal pillar with clamping screw, supported on a black base 100x50mm with an engraved index line at one end to accept rods of 6mm diameter as used on standard optical bench fittings. See Enlarge Click to Enlarge STUDENT SPECTROMETER (LSE) The base, integral with the collimator tube support, carries the swinging telescope arm pivoted on a bearing with spring loaded end thrust plates. This type of bearing eliminates any slack which would otherwise develop with wear. The collimator & telescope tubes are one piece precision casting in light alloy, concealed helical action focusing devices are provided. The collimator slit with spring loaded jaws is of a new & robust design which ensures retention of the initial accuracy. The graduated prism table support, 180mm diameter, is divided in degrees; the vernier, reading to 0.1 is fixed to the telescope arm. This arrangement permits easy estimation to 0.05 from the conveniently positioned vernier scale. . The fully adjustable prism table 75mm dia. is engraved with concentric rings, which facilitates correct location of a prism & has two screwed holes for the attachment of the prism & grating holder, to accommodate a prism upto 25mm high. Large diameter clamping knobs are fitted for movement control & fine adjustment is provided for the telescope. All bright parts are chromium plated with the base & tube in synthetic hammer finish. See Enlarge Click to Enlarge INTERMEDIATE SPECTROMETER (LSE) Telescope vernier reads to 1 min. of arc. A model for student use, with an optical system equivalent to that on more advanced models, thus permitting many quantitative experiments. Graduated disc 127mm diameter, fixed to table, double ended vernier, to read to one min. of arc, attached to telescope. Both telescope & table have fine adjustment screws & release of clamping screw enables coarse adjustments to be made by hand. Telescope & collimator are fitted with 178mm focal length, 32mm clear aperture achromatic objectives & have rack & pinion focusing telescope fitted with 15x Ramsden eye piece & cross line graticule, collimator with adjustable slit, length 6mm, mounting on telescope & collimator permits accurate levelling of axis & squaring of axis of rotation. The spectrometer table, marked with lines to assist positioning of prism & diffraction grating. Complete in hard wood case with following accessories: One prism clamp, one diffraction grating holder, one watchmakers’ eyeglass, one tommy bar for adjusting optical axis. See Enlarge Click to Enlarge MERCURY VAPOUR LAMP (LSE) With holder & choke, 80W. See Enlarge Click to Enlarge SODIUM VAPOUR LAMP (LSE) Complete with vacuum jacket 35 watts. For producing monochromatic light at a high intensity. Each lamp has a glass envelope with an inner discharge tube containing the gas or vapour and two electrodes. The envelope is mounted on an E.S. cap, providing an arc centre height of 110mm, approx.. Each lamp is fully interchangeable, no adjustment being required. See Enlarge Click to Enlarge LAMPHOUSE & TRANSFORMER (LSE) Comprising a lamphouse & transformer. The lamp gives a steady light for high intensity. Special design of transformer ensures that the lamp starts immediately as it is switched on. When mounted on the integral stand, the lamp is enclosed by a cylindrical lamp house with a circular aperture & the light centre height is adjustable from 200mm onwards. The lamp house is open at the top to allow for ventilation & may be removed for operation on a separate stand, as required. The transformer is housed in a two part sheet steel case with ventilation louvers & has a lamp house supplying rod mounted directly onto the transformer case provided a convenient self contained assembly. A 3 core captive flying lead is provided for mains connection. See Enlarge Click to Enlarge LIGHT FILTERS (LSE) LIGHT FILTERS Coloured, gelatine film, 50mm square card mounted. See Enlarge Click to Enlarge COLOUR FILTER SET (LSE) Un-mounted acetate sheet, size 50x50 mm, comprising three primaries and three secondaries. Set of 6. See Enlarge 1 2 3 4 [5] 6 [«Back ||Next »] Go to Top