For internal timing and synchronizing of magnetos to the aircraft engines. Simply attach 3 clips to magnetos and adjust until both bright lights flash in synchrony and the buzzer changes pitch.
Professional well made product. Just used it on my Bonanza doing an owner assisted annual.
quick and well
When the package ( magneto buzz box)arrived it was audibly buzzing. I guess in shipment the switch was activated. I guess it had been buzzing for 2-3 days. I dont expect to get much more battery life out of it. The case of the timing device is taped shut. Is it difficult to change the battery? Does it take a regular battery?
Easy to use .
When I first attempted to use the unit it was dead. The batteries [4 each AA batteries] are located internally. There is no access to the batteries without breaking the Warranty Seals. I broke the seals and voided my warranty so I could use my unit. After re-seating the batteries, the unit worked as designed. The P-lead clips are a bit large and stiff. I had to use some smaller clip leads to attach to the Mag P lead nuts and then connect the smaller clip leads to the larger clips which are on the unit. I am going to replace the clip leads that go to the mags. I shall keep the large clip lead for ground. The price is a bargain.
The dimensions are 6" x 3.5" x 2".
It uses a 9V alkaline battery.
This timing light uses 4 AA batteries.