Electric staff - Electric staff instruments The staff and ticket system was still too inflexible for busy lines, as it did not allow for the situation where the train intended to carry the actual token was cancelled or running very late. To provide for this, the electric train token system was developed. Each single-line section is provided with a pair of token instruments, one at the signal box at each end. A supply of identical tokens is stored in the instruments, which are connected by telegraph lines. A Staff can be removed from one instrument only if both signalmen co-operate in agreeing to the release. Once a Staff has been removed, another cannot be removed until the token which is "out" is replaced in either instrument. (There are variations on this sequence of events.) By this means, it can be ensured that at any one time, only one token is available to be issued to a driver. Staff belonging to adjacent sections have different configurations to prevent them being inserted into the wrong instrument. Nevertheless, in the Abermule train collision in 1921 and lax working procedures allowed the safeguards provided by the electric Staff system to be circumvented; a driver was handed a Staff for the wrong section, and without reading the information listed on the staff, proceeded on the mistaken belief that the Staff was correct. To prevent this, it became a requirement in the UK for the signals controlling entry to the single line section (starting or section signals) to be locked at danger unless a token has been released from the relevant Staff instrument. Historic - Victorian Railways Electric Staff Instrument Electric Staff Instrument made of Iron , Brass and Glasspuffing billy, electric staff instrument, victorian railways

An anemometer is intended for determining velocity distribution over an area or in a boundary layer. This item was purchased by Mechanical Engineering upon the request of Dr Len Cubitt, to determine wind speed at various heights above the ground. Investigation related to wind energy harnessing projects, including that undertaken by MARS Industries in Ballarat. The 6-cup anemometer had a marked superiority in tests over the 3-cup anemometer and also had lower starting speeds.Anemometer in a case complete with mounting blocks, but without electric leads for connecting the black finished wood case which also incorporates pulse counters and connections for power supply and for other logging instruments. Serial Number AM1-6-8875 Name Plate on lid between clasps. 'RIMCO" RAUCHFUSS INST & STAFF Pty Ltd 12 Monomeath Drive, Mitcham, Vic. 3132" scientific instrument, anemometer, len cubitt, mechanical engineering, energy harnessing projects, starting speeds