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EM Apparatus

Manufacturer of a wide range of products which include thomson apparatus, helical apparatus, magnetron valve apparatus, millikan oil drop apparatus and zeeman effect apparatus.

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Clients can avail from us Thomson Apparatus as we are a leading manufacturer and supplier of thomson apparatus. Thomson apparatus is used to measure the mass to charge ratio of the cathode rays by measuring how much rays were deflected by a magnetic field and comparing with the electric deflection. The discharge tube is placed between the poles of a large electromagnet.


  • Accurate measurements
  • Robust design
  • Long lasting

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Widely acclaimed as an efficient manufacturer and supplier, we are engaged in offering Helical Apparatus. Helical apparatus is used to determine the value of e/m (charge/mass) for an electron by helical method. Consisting of a direct current power supply, helical apparatus also has potentiometers that are mounted on the front panel for focus control, intensity and shift controls with meters to measure acceleration voltage and solenoid current.


  • CRT mounted
  • Octal base
  • High tension DC power supply

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We are a leading manufacturer and supplier of Magnetron Valve Apparatus. Magnetron valve apparatus is used to measure the charge/mass ratio of an electron by short solenoid method. Designed using a low voltage direct current power supply unit with filament voltage and solenoid current controls, magnetron valve apparatus has anode meters for anode voltage measurements which are very highly accurate.


  • Mounted on wooden stand
  • Valve in solenoid pipe
  • Long functional life

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Known in the industry as a prominent manufacturer and supplier, we are engaged in offering Millikan Oil Drop Apparatus. Millikan oil drop apparatus consists of an atomizer which helps to spray tiny oil droplets. By means of a short focal distance telescope, the droplets can be viewed. There are two plates, one positive and one negative with dc supply attached to the plates. Size of the charge on a single electron is measured by millikan oil drop apparatus.


  • Chamber for ionization
  • Variable speed by varying voltage
  • DC supply

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We are a well-known manufacturer and supplier of Zeeman Effect Apparatus. These are widely used in optics, electromagnetism, mechanics, computer applications and modern physics worldwide. It is used for determining E/M ratio and offered product provides accurate results. Offered device is manufactured as per the set international norms by a team of diligent professionals. These devices are known for their accuracy, easy usage, reliability and quality. Valued patrons can avail the facility of customization from us to get the desired product as per their given specifications. In addition to this, we have made Zeeman Effect Apparatus available in market at competitive prices.



  • Higher Accuracy
  • Easy to Handle
  • Low Maintenance

The apparatus consists of the following items:

  • (i) Constant deviation spectrograph : 1 No.
  • Calibration range: 4000 Å - 7000 Å, ± 10 Å
  • (ii) Constant deviation spectrograph prism (μ = 1.71) : 1 No.
  • (iii) Fabry-Perot Etalon. Clear aperture: 25 mm : 1 No.
  • (iv) Micrometer eyepiece. Range: 25 mm : 1 No.
  • (v) Electromagnet having field strength 10 kilo Gauss at 10 mm gap between its pole : 1 No.

System  Requirement:

  • Windows XP2/V1STA
  • Pentium 4, 2.4 MHz or Higher and 17" color screen
  • 100 MB free hard drive space for program installation
  • 2 GB DDR RAM recommended

Additional Information:
  • Item Code: ZEA-001
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C.s. Dahiya (Proprietor)
WP- 56, Wazirpur, Ashok Vihar
Delhi - 110052
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