Hargolal & Sons
Hargolal & Sons
Ambala, Haryana

Physics Lab Equipment

We are known in the industry for our expertise in manufacturing and exporting high quality Physics Lab Equipment. The offered range is provided in various technical specifications based on the requirements of our clients. This range is specifically manufactured using quality assured components by our expert and well-trained professionals. Further, the team aids us in offering the range within the given time - frame at the clients' end.

We also import and supply high end German made Physics equipment from 3B Scientific GmBH. We offer workshops to our customers of this equipment to train them in the use of these experiments/equipment.


  • Spectrometer
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Product Details:

Prism Flint Glass60 Degree
Base length40 mm
Height250 mm
Transmission Grating300 lines/mm
Angular scale0 to 360 Degree
Scale divisions0.5 Degree
Weight: approx12 kg
Weight11.7 kg
Dimensions54.6 x 47.0 x 29.2 cm

Spectrometer with rotatable prism or grating and directionally-adjustable objective tube for observing and measuring emission and absorption spectra. Can also be used for precise determination of the optical parameters of prisms or gratings. Includes prism with holder and transmission grating with holder. Objective tube has adjustable slit width and object distance of f = 175 mm, 32 mm diam. Eyepiece tube has continuous focusing and viewing angle adjustable eyepiece with cross-wire of f = 175 mm, 32 mm diam.

Spectrometers: Three models with following features in common. Differences noted against each model.


Base: Heavy cast-iron base, oven-baked paint. The heaviness of the base provides stability to the instrument.


The main scale (diameter 150mm) is divided 0 to 360° ´ ½° and fixed to a table that also holds the telescope. There are two verniers reading upto 1 minute of arc, located 180° apart at opposite sides of the main scale. Both verniers are visible through two protective acrylic windows. Release of a clamping screw allows independent rotation through fine adjustment screws for the telescope and vernier scale.



Mounted on a movable pillar, the telescope has a fine adjustment screw, locking screw and axis adjustment. Achromatic objective of focal length 178mm. Ramsden eye-piece 15X with cross-line graticule. With rack & pinion focusing.

Collimator: Has achromatic objective of focal length 178mm. Rack & pinion focusing. Adjustable slit, length 6mm, is made of stainless steel.


Prism Table: Marked with grooved lines to assist positioning of prism in relation to leveling screws. Has interchangeable clamping units for prism and diffraction grating.

Spectrometers supplied with prism clamp, grating holder, magnifier lens and tommy bar.


4873 A – Spectrometer, Standard:

  • With leveling screws.
  • Objective lenses of diameter 25mm, aperture 24mm.
  • Veriner reads to 60 seconds of arc.


4873 B – Spectrometer, Improved (26mm Aperture):

Our most popular spectrometer.

  • The achromatic objectives are of diameter 28mm and aperture 26mm.
  • The veriner reads to 60 seconds of arc.
  • Special scratch-resistant, oven-baked crinkle paint on base and body in contrasting colors. The prism table is electro-statically painted with a matte-black powder coating that is hard and long lasting.
  • The body and fittings are streamlined avoiding nooks and crevices around fittings, where the paint could peel in the long run. The holding pillars for telescope and collimator are made of solid metal block to provide durability and enhanced streamlined appearance.
  • All essential parts are interchangeable.
  • The scale and vernier have a fine granular finish for easy readability.


4873 C – Spectrometer, Improved (30mm Aperture): As 4873 B, but with achromatic objectives of diameter 32mm and aperture 30mm.


Additional Information:

  • Item Code: 1008673-U22050
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Light Box and Optical Set

Light Box and Optical Set
  • Light Box and Optical Set
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Product Details:

Lamp12 V, 36 W
Connections4-mm socket
Light box17.5 x 10.0 x 6.5 cm approx.
Storage case25 x 24 x 10 cm approx
Weight1.5 kg
Dimensions32.0 x 32.0 x 14.2 cm

Equipment set for the execution of bench-based optical experiments, consisting of a light box in a sturdy plastic housing and numerous optical components. The complete set is housed in sturdy styrofoam storage case. The light box has four light outlets: front, back, and two side outlets with hinged mirrors for experiments on color mixing and shadows. All openings are equipped with mounts for optical components in 50 x 50 mm slide frames. Parallel, convergent, and divergent light can be generated by adjusting a mixer lens at the front of the lamp. There are two double-sided slit diaphragms available so that four different beam configurations can be created.

  • Coloured light and coloured objects
  • Mixture of colours

  • Casting shadows
  • Coloured shadows

  • Reflection from a plane mirror
  • Reflected images, image reversal
  • Multiple reflections from a mirror
  • Reflection from a concave mirror (focal point and spherical aberration)
  • Reflection from a parabolic mirror
  • Reflection from a convex mirror

  • Determining refractive index with a semi-circular object
  • Determining refractive index with a parallel block
  • Angle of minimum deflection for a prism
  • Total internal reflection in a semi-circular object
  • Total internal reflection in a prism
  • Focal point of a converging lens
  • Focal point of a diverging lens
  • Spherical aberration

  • 1 Light box
  • 1 Plane mirror (glass)
  • 1 Concave mirror (metal)
  • 1 Convex mirror (metal)
  • 1 Bi-convex lens, large (transparent acrylic)
  • 1 Bi-convex lens, small (transparent acrylic)
  • 1 Bi-concave lens (transparent acrylic)
  • 1 Parallel plate (transparent acrylic)
  • 1 Semi-circular object (transparent acrylic)
  • 1 60° prism (transparent acrylic)
  • 1 Asymmetrical 90° prism (transparent acrylic)
  • 1 Symmetrical 90° prism (transparent acrylic)
  • 2 Slit diaphragms
  • 8 Color filters (in slide frame)
  • 8 Color charts
  • 1 Pair of connector leads with 4-mm plugs

  • Power supply not included

Additional Information:

  • Item Code: 1018471-U30095
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Inclined Plane

Inclined Plane
  • Inclined Plane
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Product Details:

Length of inclined plane600 mm
Length of base450 mm
Weight2.7 kg
Dimensions68.6 x 17.8 x 7.6 cm

Sturdy aluminum construction. The inclined plane, 10x60cm, is hinged to a base, 10x45cm. An aluminum arc scale, which can be mounted on the plane, is graduated to measure the angle of inclination from 0-45°, and vertical height to 25cm. A linear scale graduated in cm, is attached to one side of the incline to measure distances along its plane. A 5cm pulley along with mounting clamp and rod, is fully adjustable. Complete with cylindrical roller with hook. With instructions.

Additional Information:

  • Item Code: 1003213-U30015
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Pulley Illustration Set

Pulley Illustration Set
  • Pulley Illustration Set
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Product Details:

Pulleys8 single, 2 double sheave
Collars With Hook6
Wooden Base20'15cm fitted with one socket, a capstan & an eye-hook
Right-Angled Clamp1

Pulley Illustration Set Small
A simpler version of #1870, with fewer components. Instructions included. Set includes:
  • Rods: one vertical, 12.5mm´61cm; one horizontal, 9.5mm´20cm with clamp.
  • Wheel & axle: 1
  • Cord: 1 roll.
  • Tommy bar to tighten vertical rod: 1
  • Hooked Masses: Brass. 1´10g, 2´20g, 1´50g, 1´100g, 2´200g, 1´500g, 1´1000g. Total 9 weights.

Additional Information:

  • Item Code: 1871
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Suparna Goel (Partner)
Hargolal Road
Ambala- 133001, Haryana, India

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