ailable are white, light blue, blue. turquoise, pink, mauve, green, yellow and grey.
Armitage Ware Ltd.. Armitage. Nr. Rugeley, Staffs, UK, the makers, are rupic ented by Dreyer and Co., Ltd., Hong Kong; and James Warren and Co Ltd., Singapore. Jesselton, Kuala Lumpur and Ipoh.
DRILL
Dual Purpose Tool for Masonry and Stone
Develop-
INTRODU · ED by Ucan ments Ltd.. Portsmouth Road. Esher. Surrey, UK, as an economical means of drilling brickwork, concrete and stone, the model PPRI drill weighs only 7 lb. It may be used either as a normal rotary drill or quickly con- verted into a percussion machine.
Drilling capacities are 5 in. in ›ft brick. 3 in. in granite and con- crete. 5. 16 in. in steel and 5% in. in hardwood: the chuck accepts a shank of up to in. It runs on a.c. or d.c. mains and produces 850 r.p.m. or 10,200 percussion blows per min- ute.
A shock-absorbing drive minimises the vibration passing from the percus-
Ucan PPRI drill
sion unit to the gears, increasing the tool's working life and reducing operator's fatigue. Standard equip- ment includes a drill chuck, a side handle and 711⁄2 ft. of 3-core 1.r.s. cable.
Agents are Louis T. Leonowens (Malaya) Ltd., Kuala Lumpur, and Cornwell and Co., Hong Kong.
ACOUSTIC CEILING
New Material Unaffected by Moisture
DEVELOPMENT of a new type of acoustical material which is totally unaffected by moisture is announced by Armstrong Cork Co., Lancaster. Pa.. USA. Known as Armstrong Ceramaguard, it is a ceramic-type material with a totally inert composi- tion that does not expand, contract or weaken under prolonged exposure to high humidity conditions.
The makers claim that Ceramaguard could be installed in panel sizes up to 21⁄2 ft. x 5 ft. without sagging effects. Initially, however, the material is offered in 2 ft. x 2 ft. and 2 ft. x 4 ft. units to accommodate standard grid
Shower test on Ceramaguard suspension systems. Both panels fea- ture a fissured surface design, and have a back coating that improves sound attenuation and minimizes the passage of dirt-laden air up through the material.
An acrylic paint finish makes the material grease resistant and washable.
Armstrong Cork have a marketing office in Hong Kong. Distributors in- clude: A. V. Dionisio, Manila; Getz Bros. and Co., Singapore, Bangkok, Taipei, and Hong Kong; and Hyun- dae Engineering Co., Ltd., Seoul.
SMOKE DETECTOR
Probe is Inserted into Ventilating Duct
THE probe of the Photain smoke detector is designed for insertion into a ventilating duct, on the assumption that this is usually the earliest place where smoke can be detected in a large building. The alarm bell sounds as soon as the smallest trace of smoke reaches the probe.
An elongated open steel tube, 16 in. long and 2% in. in diameter with a Sin. diameter movable mounting flange, holds two photo-electric cells.
Photain smoke detector
one at the inner end and the other- together with a low voltage lamp- at the end outside the duct. from the cells is fed into a control Output unit and balanced for normal condi- tions.
As soon as smoke passes through the probe it affects the inner cell, putting the circuit out of balance and operating the alarm. The two-cell balanced circuit provides for voltage fluctuations, which affect both cells equally. When the smoke stops, the alarm automatically resets.
The control unit, in a cast-
aluminium housing suitable for wall or panel mounting, contains power supplies, setting-up control, red and green indicator lights, lamp failure relay and alarm relay.
Photain Controls Ltd.. Randalls Road, Leatherhead, Surrey, UK, are the makers. They are not represented in S.E. Asia.
POLYTHENE MESH Figured Patterns Serve as Screens or Grilles
NETLON. an integrally extruded polythene mesh, is now available in two figured patterns: No. 18, a fine, close mesh with 14 per cent open space, and No. 24, a medium mesh with 24 per cent open space. Both are recommended for use as decora- tive partitioning inserts, radiator screens or grilles over ducted air diffusers.
Each pattern is supplied in a choice of four colours white, black, light grey and ivory acids, alkalis and up to 100 deg, C.
Figured Nelton 18 comes in rolls 1 ft. 6 in. wide by 50 ft. long and sheets mea- suring ft. 6 in. by 3 ft., Figured Nelton 24 in rolls 2 ft. wide by 50 ft. long, and in 2 ft. by 1 ft. 2 in. sheets.
and withstands continuous heat of
Pattern No. 24
Netlon was developed by Spicers. Ltd., Loughton, Essex, UK. The ex- clusive licensee in Asia is Mitsui Petrochemical Industries, Ltd., Tokyo.
Agents are: Nippon Trading Co.. Ltd., Hong Kong, and Taipei: Mitsui Busson Kaisha (Thailand) Ltd.. Bang- kok: and Mitsui and Co., Ltd., Singa- pore, Manila, and Saigon.
DIFFUSERS
Suitable for Extract or Inlet Use
INTRODUCTION of a new range of Eurovent polypropylene diffusers is announced by Van den Bosch, Ltd.. Europair House, Alexandra Road, London, S.W.19.
The diffusers, which are
a deve- lopment of the plate valve, are made from
non-corrosive polypropylene
Eurovent diffuser
Far East Architect & Builder January, 1966