For the measurement of velocity and acceleration, using timing marks made on a moving paper tape by a vibrating striker. Designed to operate on a 12V a.c. supply and uses the mains frequency as its timing standard. The unit is housed in a moulded case L115 x W60 x H70mm, including mounting flanges. The top of the case carries a tape guide with carbon paper disc support and adjustable anvil for the striker point.
All moving parts are fully enclosed and electrical connection is via 4mm sockets.