For timing motion in one dimension on a piece of paper in the form of dots spaced at equal interval of time, An electromagnet enclosed in a box operates on 1 2V AC through a pair of 4mm sockets. The screw shaped hammer on the armature mounted at the top of enclosure moves up/down with the changing polarity of electromagnet and leaves well defined dot on paper strip moving beneath carbon paper disc. Guides on top of enclosure assure smooth and straight movement of paper strip. Amplitude of vibration of hammer can be varied to get sharp dot and relative position of carbon discs with respect to paper tape adjustable for their optimum use. Includes a stand for mounting paper tape roll. Complete assembly mounted on a stable, non-skid base, Supplied complete with paper tape and carbon paper discs.
Worldwide Institutional Supply & Export Solutions
Advanced Educational, Medical & Technical Laboratory Equipment Manufacturer
INTERLABS is a trusted Indian manufacturer and exporter of educational laboratory equipment, engineering training systems, healthcare teaching products, TVET solutions, medical instruments, communication trainers, clean air systems, and institutional procurement equipment for global educational and healthcare markets.
Educational & Technical Training Systems
Comprehensive STEM learning systems, engineering trainers, electronics communication trainers, embedded control modules, and vocational training equipment designed for schools, universities, polytechnic institutes, and technical education projects.
Healthcare & Medical Equipment Solutions
Professional medical laboratory products, anaesthesia instruments, healthcare teaching systems, institutional medical training products, and procurement support solutions for hospitals, healthcare institutions, NGOs, and government healthcare programs.
Industrial & Clean Air Laboratory Solutions
Clean air equipment, laboratory airflow systems, institutional research products, engineering laboratory systems, and technical infrastructure solutions for industrial, educational, and healthcare laboratory environments.
Global Institutional Procurement & Export Support
We support educational institutions, technical universities, engineering colleges, healthcare projects, vocational training centers, NGOs, ministries, government procurement agencies, and industrial training organizations across Africa, the Middle East, Southeast Asia, and international export markets.
Our export-ready manufacturing infrastructure supports bulk institutional procurement requirements with professional export packaging, OEM manufacturing capability, logistics coordination, and worldwide shipping support for educational and healthcare infrastructure projects.

