Staedtler Mars 660 20 drafting head: two clear rulers with printed scales meeting at a right angle above a round black and blue protractor dial with a blue push-button
Staedtler Mars 660 20 drafting head: two clear rulers with printed scales meeting at a right angle above a round black and blue protractor dial with a blue push-button
Staedtler

Staedtler Mars Drafting Arm for 661 A3 Drawing Board 660 20

Regular price
$100.25
Sale price
$100.25
Regular price
RRP $107.47
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SKU: SR660 20

UPC: 4007817601150

MPN: 660 20

Protractor Drafting Head For The Mars 661 Boards

Staedtler Mars 660 20 is a drafting head with two transparent rulers and a protractor dial, made to work with the Mars 661 A3 and A4 drawing boards.

Where the board alone gives parallel lines, the drafting head adds angles. A Stop/Go push-button lets the head either hold a chosen angle or turn freely, and it clicks into automatic settings at every 1° step. The protractor scales run in opposite directions from 0 to 90°, with extra marks at 7° and 42° for dimetric projection, a common way of drawing objects in technical drawing classes.

The two rulers carry double-sided, opposite-running scales, and parallel guide lines on them act as a hatching aid when shading sections. Because the rulers sit at a fixed right angle, right angles can be drawn without lifting the head. Staedtler state that it is made in Germany and is operated with one hand.

Our listing calls it a drafting arm; Staedtler name it a drafting head.

See the matching drawing boards, geometry and technical drawing tools and Staedtler range.

  • Fits the Staedtler Mars 661 A3 and A4 drawing boards
  • Stop/Go push-button: hold an angle or turn freely
  • Automatic settings at 1° intervals
  • Protractor scales 0 to 90° with 7° and 42° marks
  • Two transparent rulers with double-sided scales
  • Parallel guide lines as a hatching aid
  • Made in Germany, as stated by Staedtler
  • Dimetric and angled projection drawings
  • Section hatching in technical drawing
  • Design and technology coursework
  • Engineering and architecture study
  • Right-angle layouts without a set square

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 660 drafting head

MPN: 660 20

Mega Code: SR660 20

Compatible Boards: Mars 661 A3 and A4, per Staedtler

Angle Setting: Stop/Go push-button, automatic 1° steps

Protractor: Opposite-running scales 0 to 90°, extra marks at 7° and 42°

Rulers: 2 transparent, double-sided opposite-running scales

Operation: Single-handed

Country Of Manufacture: Germany, as stated by Staedtler

Pack Size: 1 drafting head

Unit: Each

EAN: 4007817601150

FAQs

Staedtler list it for use with their Mars 661 A3 and A4 drawing boards. We cannot confirm fit on other brands of board.
Staedtler add them for dimetric projection, a technical drawing method that uses those two angles.
No. This listing is the drafting head only. The Mars 661 A3 board is sold separately.
Staedtler do not publish the ruler lengths for the 660 20, so we do not quote a figure.

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.