The IEC Motorised Stroboscope is a useful device for the teaching of the stroboscopy. The LB3850-001 and LB3851-001 are hand driven discs and are difficult to keep at a constant speed. The motor driven stroboscope has an inbuilt speed control and maintains constant speed reasonably well. Supplied with a set of 3x discs with 4, 8 and 12 slots. A blank disc permits the creation of a disc in the classroom. The unit can be supported on a retort stand with a bosshead. Runs from either AC or DC up to 12V. maximum.