3
Amendment
(d) Control equipment, accessories and parts which
are specially designed for the above presses.".
3. The Schedule to the principal regulations is amended under
of Schedule. the heading "GROUP D”-
(Group D).
Amendment
of Schedule. (Group E).
Amendment
(a) by the deletion of the sub-heading "DIESEL ENGINES AND ELECTRIC GENERATORS" and the substitution therefor of the following new heading-
"ELECTRICAL AND POWER GENERATING EQUIPMENT";
(b) by the addition at the end thereof of the following new item- Electric vacuum furnaces as follows:
****
(a) Consumable electrode vacuum arc furnaces with
a capacity in excess of 5 tons, not elsewhere specified;
(6) Skull type vacuum arc furnaces;
(c) Electron beam vacuum furnaces.",
4. The Schedule to the principal regulations is amended under the heading “GROUP E” by the deletion of item 4 and the substitution therefor of the following-
**4.
Equipment for the manufacture of semi-conductar materials, as follows:
(a) Equipment specially designed for the production or processing of dendritic forms of any semi-conductor material, or combination thereof, suitable for use in diodes or transistors:
For the purposes of this Schedule
"dendritic" means a ribbon-like product of semi- conductor material which may be drawn in various widths, thicknesses and lengths and which may repre- sent processing stages from a relatively pure form of the material through advanced stages of treatment. (6) Equipment, not elsewhere specified, specially designed for purifying or processing silicon or germania except equipment designed for the zone purification of germanium.".
5. The Schedule to the principal regulations is amended under of Schedule. the heading "GROUP F by the addition at the end of item 6 of the (Group F) following-
"(1) Gyro-astro compasses.".
6. The Schedule to the principal regulations is amended under Amendment
of Schedule. the heading "GROUP G".
(Group G).
(a) by the deletion of item 9 and the substitution therefor of the
following-
**9.
Telemetering and telecontrol equipment suitable for use with aircraft, (piloted or pilotless), space vehicles or weapons, (guided or unguided).":
(b) by the deletion from item 17(a) of the figures "300" and the
substitution therefor of the following-
**500***
(c) by the deletion of item 20 and the substitution therefor of the
following-
"20. Electromagnetic waveguides and components therefor.
as follows:
(a) Rigid waveguides and components designed for use at frequencies in excess of 12,500 mega- cycles;
(b) Flexible waveguides of all types;
(c) Waveguides having a bandwidth ratio greater
than 1.5:1:
(d) Waveguide components, not elsewhere specified,
as follows:
(1) Directional couplers having a bandwidth ratio greater than 1.5:1 and directivity over the band of 15 decibels or more;
(2) Circulators using gyro-magnetic properties; (3) Rotary joints capable of transmitting more than one isolated channel or having a band- width greater than 5 per cent of the centre mean frequency:
(4) Magnetic waveguide components.";
(d) by the addition at the end of item 21 of the following-
"(d) Alpha-numeric and similar data or information dis-
play tubes.":
(e) by the deletion of item 22 and the substitution therefor of the
following-
"22. Semi-conductor diodes, including rectifier diodes and
switching diodes and specialized parts therefor.":
by the deletion of item 28 and the substitution therefor of the following-
"28. Valves (tubes) electronic, and specialized parts, as
follows:
(a) Valves designed for use at frequencies between
300 megacycles per second and 500 megacycles