Compasses

About Compasses

Compasses are precision marking and measuring instruments essential for tradespeople and craftspeople who need to scribe circles, transfer measurements, and mark curved lines accurately. From joiners creating bespoke timber work to engineers producing technical drawings, a quality compass remains indispensable for accurate layout work. MyToolShed.co.uk stocks a comprehensive range of compasses including spring bow compasses for detailed work up to 150mm diameter, standard compasses for everyday marking tasks, and beam compasses for large-radius applications exceeding 600mm.

Modern compasses come in various configurations to suit different materials and applications. Divider compasses feature two hardened steel points for scribing metal and transferring measurements, whilst pencil compasses incorporate adjustable pencil holders for marking wood, paper, and softer surfaces. Professional-grade instruments from trusted manufacturers like Bahco, Stanley, and Irwin feature quick-release mechanisms, interchangeable legs, and micro-adjustment screws for enhanced precision and versatility across multiple trades.

Applications

Compasses serve essential functions across numerous trades and industries:

• Joiners and Carpenters: Marking curved cuts, scribing circular joints, and setting out radius work in timber construction and furniture making
• Metalworkers and Fabricators: Transferring measurements and marking circular components in steel, aluminium, and other metals
• Engineers and Draughtsmen: Creating technical drawings and precision diagrams requiring accurate geometric constructions
• Stonemasons: Marking curved cuts and circular features in stone, marble, and masonry work
• Plumbers and Heating Engineers: Plotting pipe runs and marking circular penetrations for installations
• Shopfitters and Cabinet Makers: Creating curved details and marking circular cutouts for fixtures and fittings
• DIY Enthusiasts: Home improvement projects requiring circular cuts and pattern making

Choosing The Right Compasses

Capacity Requirements: Consider the maximum radius you'll typically need. Spring bow compasses handle up to 150-200mm diameter, standard compasses extend to 300-400mm, whilst beam compasses are necessary for larger work. Trade professionals often require multiple sizes for versatility.

Build Quality: Professional-grade compasses feature hardened steel points that maintain sharpness on tough materials. Cast zinc or brass bodies with precision joints ensure consistent accuracy over time. Avoid lightweight consumer models for daily professional use.

Adjustment Mechanisms: Quick-release systems suit frequent radius changes, whilst micro-adjustment screws provide precision for technical drawing and engineering work. Spring bow mechanisms offer excellent control for small, accurate circles.

Point Configuration: Assess whether you need pencil holders for wood marking, hardened scribing points for metal, or interchangeable legs for multiple materials. Dividers with two pointed legs are specifically designed for metalwork and measurement transfer.

Frequently Asked Questions

What's the difference between a compass and dividers?

A compass typically has one pointed leg and one leg with a pencil holder for drawing circles, whilst dividers have two pointed legs used primarily for transferring measurements or scribing marks on metal and hard materials. MyToolShed.co.uk stocks both types for comprehensive marking capabilities.

What size compass do I need for typical joinery work?

For most joinery applications, a standard compass with 200-300mm capacity covers common circular work and radius marking. A spring bow compass handles smaller detailed work up to 150mm, whilst beam compasses become necessary for large-radius work like curved staircases or architectural features.

Can I use the same compass for metalwork and woodwork?

Whilst robust compasses can handle both materials, specific tools often work better for each application. Metal scribing requires hardened steel points that may damage softer wood, whilst pencil compasses suitable for wood aren't ideal for metal. Professional-grade compasses with interchangeable legs offer the most versatility across different materials.