supply, installation and commissioning of items as per annexure-a digital chemical balance - weight range - upto 100 gm, accuracy -0.01 mg. lcd display, automatic internal adjustment, which takes into consideration temperature changes and time flow, several communication interfaces: 2 x rs 232, type a usb, type b usb and optional wifi binocular brightfield and simple polarization metallurgical compound microscope with incident (reflected) and transmitted light brightfield observation and infinity corrected optical system f-200mm. vertical kohler 6v 30w halogen, transmitted kohler 6v 30w illumination with quintuple nosepiece and auto voltage sensing power supply => limited