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B&Q£13.04Visit shop B&Q - Geared Head Pencil Compass 135mmPrecision Drawing Tool For Technical DrawingGeometrySchool & Office (4046)
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The Jakar Geared Head Pencil Compass 135mm (4046) is a professional precision drawing tool for creating accurate circles and arcs. It offers smooth, controlled adjustments ideal for technical drawing, geometry, and detailed projects. While its geared mechanism provides excellent stability, users should note that it requires standard pencil leads and may take some practice for absolute beginners to master fine control.
| Model Part Number | 1046 |
|---|---|
| Brand | Jakar |
This compass is designed to hold standard pencil leads or sharpened standard wooden pencils. You may need to adjust the screw or clamp to secure different lead thicknesses.
The compass has a length of 135mm, which generally allows for drawing circles up to a diameter of approximately 270mm (135mm radius), depending on the angle of the legs.
This specific model is designed for pencil use. It does not come with an ink attachment, and using ink directly may damage the pencil holder or the compass.
Ensure the geared mechanism is clean and moves freely. Use a sharp pencil lead and maintain a consistent pressure and angle while drawing the circle.
Keep the geared head clean by wiping it with a dry cloth. Avoid using oils or lubricants that can attract dust and impede smooth operation.
The pencil holder is typically integrated or secured by a screw. If it becomes loose or damaged, check for a replacement screw or consult the manufacturer's support for specific part availability.
The compass is constructed from durable materials designed for precision and longevity, typically metal alloys.
Ensure the screw holding the legs in place is tightened. Check for any damage to the leg joints.
Gently clean the gears with a soft brush to remove any debris. Do not apply lubricants unless specified by the manufacturer, as they can attract dust.
Ensure the pencil lead is securely fastened in the holder and is sharpened to a fine point. Check that the compass is held at a consistent angle to the paper.
Fully extend or retract the legs. For very small radii, ensure the pencil lead holder is not obstructing the adjustment.
Setup: To set up the compass, insert a standard pencil lead or a sharpened standard pencil into the designated holder on one of the legs. Adjust the legs to the desired radius by turning the fine adjustment knob on the geared head. Ensure the pencil lead is firmly secured and protrudes slightly to make contact with the paper.
Compatibility: This compass is designed to work with standard pencil leads and standard wooden pencils. It is compatible with most types of paper used for drawing and drafting.
Care: After use, clean the compass with a dry or slightly damp cloth to remove any dust or graphite residue. Avoid using harsh chemicals or abrasive cleaners. Store the compass in a protective case or its original packaging to prevent damage and maintain its precision. Periodically check that the geared mechanism moves smoothly and clean any accumulated dust from the gears.
