The Start of The Holiday Sales – 20% off all K&E Deci-Lon rules until 30 November

October 27, 2026

Because we want to try and make the lives of our customers a lit bit easier in some very complicated times, we’re offering a limited time discount on some of our premium, US made, slide rules.

Until the end of November, all of our K&E Deci-Lon slide rules will be discounted 20%, withe the discount applied at checkout.  While this is great news for everyone, this is especially beneficial for US customers, as these rules have no affiliated tariffs or duties due to their country of origin being the US.

Rare Rules & The Last Test Equipment

August 24, 2026

That could be the title of a very uninteresting Indiana Jones movie, or the addition of four extremely rare projection slide rules! See them now on our Recently Added page.  These rules are designed to be used on an overhead projector to teach large groups of people how to use a slide rule.

We’ve also uncovered the very last piece of test equipment in our entire inventory.  A digital power supply that had been stored in a long lost closet, and escaped our great equipment culling.  If you need a digital power supply, consider the very last one in our inventory!

Old Site & SRC Main Page Downtime

August 17, 2026

We’ve been having some hosting related issues during the last few days, and have been experiencing some site downtime as a result.  This should be completely resolved in the very near future.

The old Sphere web page has also been permanently removed from the internet, and is no longer available.

We’re Taking a Break! – 12 May – 02 June 2026

May 8, 2026

We’re taking a much needed vacation, and our offices will be closed 12 May – 02 June 2026.

Any orders that are sent to us during that time will be processed as soon as we get back, and we’ll make sure to get back to you as quickly as possible.

For US Customers – Tariff FAQ

April 28, 2026

The status of tariffs on goods shipping to the US does change regularly, and if you are one of our US customers, we hope that the following summary information helps to answer most of your questions:

• Are tariffs still being charged on goods going to the US?
  • Yes.  Tariff rates are set by the US government based on country of manufacture.
• What about the US Supreme Court ruling on tariffs?
  • Our limited understanding of this ruling is that some previous tariffs were removed, but that different ones have since been applied after this ruling.
• Are tariff refunds available for previous shipments?
  • Short answer: No.  Long answer: The current regulations on requesting refunds limits eligibility to specific companies that directly filed/submitted the tariff payments to the US government.  SRC is not eligible to file refund requests under these restrictions, as only the brokerage that handled the clearance and payment can file a refund request.
• Who is SRC’s brokerage handler?
  • We are required to use Zonos as a clearance broker for all shipments that are sent via Canada Post.  These brokerage rates include the tariff to be paid to the US government, and a processing fee by Zonos.
• Can SRC use a different brokerage?
  • Canada Post only permits use of Zonos for its shipments.  Shipments sent via different services (e.g. FedEx or UPS) use their own brokerage services, which are often more expensive than Zonos.
• Can packages be sent to the US with tariffs payable on receipt?
  • No.  All shipping services currently shipping to the US require that tariffs be prepaid before the shipment is accepted by the carrier.

We appreciate that import tariffs for certain slide rule and equipment brands can be prohibitive, where possible we try and offer a discount to ease the pain of those tariffs.  Specific brands that have little or no import duties are Pickett and K&E, as they were both manufactured in the US.