The 1531-AB Strobtac electronic stroboscope, is one of the smallest, fastest and brightest
on the market today. Thousands of these instruments are now in use in schoolrooms , research laboratories, printing plants , textile mills, chemical plants, and in virtually every type of manufacturing activity. The GenRad 1531-AB is an outstanding unit
For the most demanding applications, IET offers the GenRad 1538-A Strobotac electronic stroboscope. With a flashing-rate range of up to 150,000 flashes per minute, the GenRad 1538-A will easily keep pace with the fastest machines known. With battery or ac-line operation , the new stroboscope goes wherever the action is .And with an accessory plug-in storage capacitor, this stroboscope can produce single, short flashes of light at an intensity of 44 million beam candelas (at a distance of one meter). Any of these features - speed, battery operation, intensity - alone would make the 1538-A stroboscope note-worthy. Together they put it in a class by itself.
Another member of our line of strobes is the GenRad 1539-A Stroboslave, a stroboscopic light
source that requires external control of its flashing rate. The Stroboslave, whose light output is the same as that of the 1531-AB stroboscope, was designed specifically for the many applications where motion study or photography, rather than speed measurement , is required. Because of its compact size, it can easily be built into machines and systems requiring continuous stroboscopic light.
The GenRad 1542-B stroboscope is an extermely easy to use and low cost solution for 
Strobe-Inspection operations. It is ideal for timing and observing motion in a variety of settings. The 1542-B stroboscope has been tailored for convenient operation. This stroboscope was designed specifically for inspection applications and features a simple pushbotton control with a single knob to control the flash rate -no switching is ever necessary.
The 1546 Strobotac Digital Stroboscope is particulary suited to speed measurements because of the instant digital readout. The stroboscope emits a high intensity, short duration flash of light for crisp, clear images of fast moving objects. It has a broad flash frequency range from 100 to 25,000 flashes per
minute. Encased in a rugged, high-impact housing, the 1546 is designed for maximum portability. Its light-weight (just 2.65 pounds) promotes hand-held operation and permits access to hard-to-light areas under inspection. The stroboscope also may be operated from any flat surface or mounted on a tripod.
Stroboscope Accessories
The usefulness of a stroboscope can be multiplied many fold by a small additional investment in accessories. The photoelectric pickoffs, for example, can synchronize the stroboscope flash with almost any kind of motion, without physical connection to the object being observed. The 1537-A pickoff will directly trigger the 1538-A Strobotac and the 1539-A Stroboslave. The 1536-A pickoff with the 1531-P2 Flash Delay further extends the usefulness of any stroboscope by permitting observation of a periodic repetitive motion at any point in its cycle. An inexpensive set of nylon disks (Type 1531-P3 Surface-Speed Wheel) converts linear speed (as, for instance, of belts, rollers, ect.) into rpm for tachometric measuremnt with the stroboscope.
Strobosope Application Notes
