Staedtler Mars comfort 551 01 in its clear hinged case on a navy card marked COMFORT: silver masterbow compass with centre wheel and a blue spares box
Mars comfort 551 compass upright with legs closed, showing the ring top, threaded spindle, centre wheel and hinged needle shoe
Mars comfort 551 compass with the universal adapter holding a black Staedtler fineliner in place of the lead leg
Close-up of the 551 compass leg tips: shouldered needle in its hinged shoe beside the lead leg and its adjusting screw
Hand holding the Mars comfort 551 by its ring top while it draws arcs on squared paper
Three Staedtler pictograms in blue for the 551: centre wheel turned by a thumb, hinged leg and needle shoe on a wide arc, and the universal adapter
Staedtler Mars comfort 551 01 in its clear hinged case on a navy card marked COMFORT: silver masterbow compass with centre wheel and a blue spares box
Mars comfort 551 compass upright with legs closed, showing the ring top, threaded spindle, centre wheel and hinged needle shoe
Mars comfort 551 compass with the universal adapter holding a black Staedtler fineliner in place of the lead leg
Close-up of the 551 compass leg tips: shouldered needle in its hinged shoe beside the lead leg and its adjusting screw
Hand holding the Mars comfort 551 by its ring top while it draws arcs on squared paper
Three Staedtler pictograms in blue for the 551: centre wheel turned by a thumb, hinged leg and needle shoe on a wide arc, and the universal adapter
Staedtler Mars comfort 551 01 in its clear hinged case on a navy card marked COMFORT: silver masterbow compass with centre wheel and a blue spares box
Mars comfort 551 compass upright with legs closed, showing the ring top, threaded spindle, centre wheel and hinged needle shoe
Mars comfort 551 compass with the universal adapter holding a black Staedtler fineliner in place of the lead leg
Close-up of the 551 compass leg tips: shouldered needle in its hinged shoe beside the lead leg and its adjusting screw
Hand holding the Mars comfort 551 by its ring top while it draws arcs on squared paper
Three Staedtler pictograms in blue for the 551: centre wheel turned by a thumb, hinged leg and needle shoe on a wide arc, and the universal adapter
Staedtler

Staedtler Mars Comfort Precision Masterbow Compass Hard Case 551 01

$50.94
$50.94
RRP $54.67
Or 4 payments of $12.74 with
Add items to a quote for bulk pricing, approvals, or purchase orders.

SKU: SR551 01

UPC: 4007817551011

MPN: 551 01

A Solid Metal Masterbow For Exact Radii

The Staedtler Mars comfort 551 01 is a solid metal precision compass with a spindle guide, spring-bow head and centre wheel, supplied in a case with a hinged lid.

On a spring-bow compass the radius is set by turning the centre wheel along the spindle rather than by pulling the legs apart, so the setting does not drift while you draw. Large push-buttons make the wheel easy to use, and Staedtler note the design prevents unintended setting adjustments. That precision is why masterbow compasses are the usual choice for repeated identical circles, bolt-hole patterns and accurate construction work.

Staedtler give a maximum circle of approximately 280mm and a length of 154mm. The leg joint and needle shoe are hinged for parallel positioning on wide radii, the needle is a shouldered type and the lead part has a 4mm shank. The case also holds a universal adapter, for using fineliners and drafting pens, plus a spares box. Staedtler's catalogue lists it as nickel-free.

Need larger circles? The 551 02 adds an extension bar.

Shop compasses, drawing boards and Staedtler products.

Often ordered together

  • Solid metal precision compass
  • Spindle guide with spring-bow head and centre wheel
  • Max circle approx. 280mm, length 154mm
  • Hinged leg joint and needle shoe
  • Interchangeable shouldered needle and 4mm shank lead part
  • Universal adapter and spares box in a hinged case
  • Engineering and mechanical drawing
  • Architecture study and studio work
  • Repeated circles of identical radius
  • Inked circles using a fineliner
  • Senior school technical drawing

Shipping

Shipping is kept simple with flat rates for selected areas and free shipping where applicable. Large, bulky, rural or out-of-area orders may require additional freight, and our team will contact you if this applies. For a more specific estimate, simply add this product to a quote or visit our shipping page.

Delivery Times

Melbourne, Sydney, Brisbane, Adelaide — 1 to 3 business days
Perth — 1 to 5 business days
Regional & Outer Areas — 3 to 7 business days

Returns

If you have questions about returns, please contact us or visit our returns page for full details.

Specifications

Brand: Staedtler

Range: Mars comfort 551 precision compass

MPN: 551 01

Mega Code: SR551 01

Construction: Solid metal

Mechanism: Spindle guide, spring-bow head, centre wheel

Max Circle: Approx. 280mm (no extension bar in this set)

Length: 154mm

Needle: Interchangeable, shouldered

Lead Part: Interchangeable, 4mm shank

Contents: Compass, universal adapter, spares box, case with hinged lid

Nickel-Free: Yes, per Staedtler catalogue

Staedtler Australia Unit: 1 piece, minimum order 1 piece

Pack Size: 1 compass set

Unit: Each

EAN: 4007817551011

Primary Distribution Centre

Factory 5, 12 Greenway Drive
Tweed Heads South NSW 2486

ABN 18 634 002 609

Get directionsContact us

FAQs

No. Staedtler list the 551 01 with the compass, universal adapter and spares box. The 551 02 is the same set with an extension bar.
The radius is set by turning the wheel on a threaded spindle, so it holds firmly and can be fine-tuned, which suits repeated circles.
It clamps common writing and drafting instruments into the compass so circles can be drawn in ink.
No. The 551 sets by centre wheel. Staedtler's push-button quick-setting model is the Mars comfort 552 01.

Shipping & Delivery

Delivery time depends on your location, the size of your order, and the shipping option selected at checkout. For in-stock items, standard metro delivery in QLD, NSW and VIC is usually 1 to 7 business days. South Australia, Tasmania, Western Australia and the Northern Territory are generally 3 to 12 business days. Express delivery for eligible parcels under 3kg is usually 1 to 4 business days in QLD, NSW, ACT and VIC. Delivery estimates apply to in-stock items only and may vary due to carrier conditions or delays.

If you need to make a change to your order, please contact our team as soon as possible. Once an order has been processed or dispatched, changes may no longer be possible. You can contact us through our Contact Us page for assistance.

Mega Office Supplies ships orders Australia wide and occasionally internationally. The best avenue would be to contact us so we can customise a specific quote for you. Please note that associated international duties, taxes and levies will be the responsibility of the customer.

Returns, Refunds & Replacements

Mega Office Supplies accepts change-of-mind returns for unopened and unused products within 14 days from the invoice date, provided the item is returned in its original packaging and in resalable condition. Original shipping costs are not refundable, return shipping is the customer’s responsibility, and a restocking fee may apply depending on the product type and supplier. Some items, including electronics, assembled or installed furniture, food, beverages, medicines, custom-made products, and certain bulk or special-order items, are not eligible for return unless required under Australian Consumer Law.

If your order arrives faulty, damaged, or incorrect, please contact Mega Office Supplies as soon as possible. Where required under Australian Consumer Law, a repair, replacement, or refund will be offered. In these cases, Mega Office Supplies will cover reasonable return shipping costs, and photographic evidence may be requested to help process the claim. Items should be reported within a reasonable timeframe after delivery.