tender for physics laboratory equipments , physics laboratory equipments , travelling microscope (item code: a002) specifications: travelling microscope (dollar)-1292 college grade, comprising 17cm & 15 cm stainless stell scales, vernier reading to 0.01 mm , provided with superb optical combination & superior fittings with heavy base, nicely finished in mettalic gray & black contrast housed in 12mm thick beautiful strong cabinet with sumnica door.with high glass ramsden eye piece with cross line graticule for better performane and durability , plancks constant apparatus (pico) [item code: a005] specifications: photo sensitive device: vacuum photo tube light source: halogen tungsten lamp 12v/35w colour filters: 635nm, 570nm, 540nm, 500nm & 460nm.accelerating voltage: regulated voltage power supply output: (+/ -)5v continuously variable through multi -turn pot display: 3 ½ digit 7-segment led current detecting unit: high stability low current measuring instrument display: 3 1/2 digit 7-segment led power requirement: 220v (+-) 10%, 50hz optical bench. scale length is 400 mm. , torsional pendulum setup [item code: a010] specifications: material - chrome plated brass disk diameter- 100-150mm wire material- phosphor bronze wire length - 500mm stand height - 500-700mm usage -demonstrates torsional oscillations and studies rotational inertia. weight - 1-2kg features- simple design, precise measurement, durable material, easy setup, educational tool fob port - ambala , compact disc laser setup[item code: a011] specifications: wavelength: 635nm - 680 nm (visible red), output power: 1mw - 5mw includes: diode laser source on a sturdy stand, optical bench, slits, diffraction grating, and power supply