Brief Description

A small rectangular diffraction grating made of speculum metal glued to a layer of glass.

History of Object

Ruled by Grayson. These gratings were made of speculum metal. This diffraction grating is number 25 in a large series which he prepared. Loaned late 1986 and returned by Trevor Wigney, graduate Secretariat.

Materials and Finishes

Glass and metal (speculum)

References

Brief Description

A selection of Grayson rulings on twelve glass slides. Slides are contained in wooden display.

History of Object

Ruled by Grayson. His test plates are ruled in bands from 5000 to 6000 lines to the inch. The inch micrometer is ruled in 100ths and 1000ths. The millimetre is divided into .25ths, 0.1ths and 0.01ths.

Materials and Finishes

Glass, paper (printed) and wood.

References

Supplementary file.

Brief Description

Rectangular glass wedge consisting of two layers. Has metal device on two sides. Marked 1/160.

History of Object

Henry Joseph Grayson designed and made a machine which enabled him to rule up to
120 000 lines to the inch for use in microscopy. The glass wedges were used for ruling the different bands. Each one was for a particular band. The one with the slope of 1 in 160 was for the 120 000 band. For the use of the wedges refer to the paper by Stone, page 11, fig 2. William Stone's daughter, Mrs. M. Murray's estate was presented to the Department of Medical History.

Materials and Finishes

Glass, metal and brass.

References

Stone, W., Journal of Scientific Instruments, 1937, p. 11, fig. 2.

Brief Description

Rectangular glass wedge consisting of two layers, one being longer. Also has rectangular glass piece glued to one end. Marked 60 000.

History of Object

Associated with glass wedge, registration number 130.

Materials and Finishes

References

Stone, W., Journal of Scientific Instruments, 1937, p. 11, fig. 2.

Brief Description

Rectangular glass wedge with slight slope on top plane. Has metal device on two sides. Marked "80".

History of Object

Associated with glass wedge registration number 130.

Materials and Finishes

Glass, metal and brass.

References

Stone, W., Journal of Scientific Instruments, 1937, p. 11, fig. 2.

Brief Description

Sloping rectangular glass wedge consisting of three glass pieces and metal device at sides.

History of Object

Associated with glass wedge registration number 130.

Materials and Finishes

Glass, metal and brass.

References

Stone, W., Journal of Scientific Instruments, 1937, p. 11, fig. 2.

Brief Description

Sloping rectangular glass wedge consisting of two layers. Has metal device on two sides.

History of Object

Associated with glass wedge, registration number 130.

Materials and Finishes

Glass, metal and brass.

References

Stone, W., Journal of Scientific Instruments, 1937, p. 11, fig. 2.

Brief Description

A series of five display cards consisting of twenty eight photomicrographs showing various magnifications of Grayson's rulings.

History of Object

Photographs prepared by Grayson around 1900 of the various types of rulings done on the micro ruling machine.

Materials and Finishes

Cardboard and paper (photographic).

References

Brief Description

Microruling engine consisting of wood frame, brass fixtures including hand wheel and glass bed.

History of Object

Grayson's microruling instrument was originally in the Physics Department and was purchased by Sir Thomas Lyle after Grayson's death. Some time in the 1930s it passed to William Stowe who had helped in its design and construction. It was 'lost' to science for over forty years but then rediscovered in 1975 having been in keeping of Stone's daughter Mrs. M. Murray. Her estate presented it to the Department of Medical History, Melbourne University. The engine was completely restored to its former condition by Mr. Gert Witte of the David Rivett Laboratories of the C.S.I.R.O. See registration number 139, glass negative.

William Stone wrote and account of Grayson's microruling engine in 1937 in the "Journal of Scientific Instruments". He gives a good description of the machine and how it works. There seems to be little doubt that Stone helped Grayson both in the design and construction of the machine. After Grayson's death both Sir Thomas Lyle and Stone used the machine to produce rulings.

Materials and Finishes

Brass (varnished), glass and wood (varnished).

References

Stone, W., Journal of Scientific Instruments, 1937, p. 11, fig. 2.
Supplementary file

Brief Description

Sloping rectangular glass wedge consisting of three glass pieced and metal device at sides.

History of Object

Associated with glass wedge registration number 130.

Materials and Finishes

Glass, brass and metal.

References

Stone, W., Journal of Scientific Instruments, 1937, p. 11, fig. 2.

Brief Description

Early X-ray tube made by William Stone, with metal "target".

History of Object

This is one of the first X-ray tubes exhibited in Melbourne.

Materials and Finishes

Glass and metal.

References

See Supplementary File for photographic copies.

Brief Description

Early X-ray tube, lacks metal "target".

History of Object

Materials and Finishes

Glass.

References

Brief Description

X-ray tube with rectangular glass (rock?) "target" in claret and grey. Bulbous pear-shape with narrow cylindrical base. On turned wooden stand.

History of Object

Materials and Finishes

Glass, metal, ?stone and wood (varnished).

References

Brief Description

X-ray tube with cluster of 5 rocks as the "target" in claret and grey. Spherical with wide cylindrical base and narrow end. On turned wooden stand.

History of Object

Materials and Finishes

Glass, metal, stone and wood (varnished).

References