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OKW’s award-winning TOP-KNOBS: Setting new standards in medical electronics
Growing numbers of designers are specifying OKW’s award-winning TOP-KNOBS for medical electronics.
With their unique styling, TOP-KNOBS are also ideal for measuring and control, laboratory equipment, HVAC, communications and building management.
Each potentiometer knob comprises a main body with a clip-in marking element that hides the lateral fixing screw and enables fine calibration. There are five elements (Pin, Globe, Disk, Wing, Arrow) in a range of attractive pastel colours: coral (pink), beach (yellow), lagoon (green), sky (blue) and mineral (grey). The main knob body is volcano (grey) or nero (black) as standard.
TOP-KNOBS can be specified with either a push-on fixing (for potentiometer shafts with flattened ends) or a lateral screw (DIN 41591). The fixing method rules out any possibility of contact with live parts. The underside of each knob is recessed to accommodate potentiometer fixing nuts.
The tuning knobs are moulded from PA6 in five diameters – ø 16 mm, ø 20 mm, ø 24 mm, ø 31 mm and ø 40 mm – for boreholes of 4mm, 6mm, 1/4” and 6/4.6 mm. Accessories include M7, M10 and 3/8”-32G round nuts for securing potentiometers to front panels. OKW can supply TOP-KNOBS fully customised. Services include machining, printing, laser marking and installation/assembly of accessories.
OKW ENCLOSURES LTD
https://www.okw.co.uk/en/Potentiometer-Tuning-knobs/Top-Knobs.htm
More standard colours for Metcase’s Unidesk
sloping-front enclosures Unidesk sloping-front terminal enclosures from Metcase are now available in three standard colours: black (RAL 9005), light grey (RAL 7035) and new traffic white (RAL 9016). Custom colours are also available.
These desktop and wall-mount aluminium enclosures are ideal for a wide range of electronic and electro-tech- nical applications including office systems, point-of-sale, medical devices, industrial/machine control and security. Unidesk has a pre-assembled case body with a flat rear panel for connectors, switches and power inlets. The front panel (accessory) is recessed to accommodate a membrane keypad. The base has pre-punched PCB fixing points. Four non-slip rubber feet are supplied, along with M3 Torx T10 and Pozidriv fixings.
IP 54 (VDE tested) ingress protection is optional with gaskets for the front and base panels. This protection is dependent on the addition of PCB pillars (accessory). UNIDESK is available in three standard sizes: 200 x 200 x 102 mm, 300 x 200 x 102 mm and 400 x 200 x 102 mm. Accessories include matt anodised aluminium front panels, wall mount kits, a PCB mounting kit and PCB/panel fixing screws.
Metcase can supply Unidesk fully customised. Services Metcase
https://www.metcase.co.uk/en/Metal-Enclosures/Unidesk.htm OCTOBER 2025 | ELECTRONICS FOR ENGINEERS 37
include custom widths, custom front panels, CNC machining, fixings and inserts, painting and finishing and photo-quality digital printing of legends, logos and graphics.
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