The Spectra Precision C59 Rod Clamp is the dependable bracket your crew can count on to mount laser receivers like the HR320, HR350, and HR250 securely to any standard grade rod. Lightweight but rugged, it’s built to take a beating on active jobsites while still delivering fast, no-slip clamping every time.
Designed with simplicity and strength in mind, the C59 features a smooth locking mechanism that allows quick setup, repositioning, or removal — perfect for crews that move fast and measure often. Whether you're setting elevations, checking cut and fill, or chasing grades, this clamp holds your receiver steady so your readings stay accurate.
It’s the kind of clamp you keep in the truck, because once you’ve used it, you don’t want to be without it.
Key Features:
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Compatible with Spectra HR320, HR350, and HR250 laser receivers
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Locks securely to grade rods — no wobble, no slippage
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Made from durable, impact-resistant materials for long jobsite life
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Easy to tighten and release, even with gloved hands
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Lightweight and compact — won’t add bulk to your setup
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Perfect for general construction, leveling, and site prep work
How it works
Spectra C59 — The Parts That Matter.
- Release tab — locks the receiver onto the clamp, and releases it.
- Jaws — open and close around a grade rod or wooden pole.
- Jaws screw — counterclockwise opens the jaws, clockwise locks them.
- Reading edge — lines up with the receiver’s on-grade marking notch.
- Bubble screw holes — where the optional bubble vial kit mounts.
From Spectra Precision’s HR320 user guide.
Fit
Spectra C59 Fits This Receiver.
- Spectra HR320 laser receiver — the C59 is its rod clamp
Running an HL450? You want the C45. An HL760, HL700 or CR700? You want the C70.
Often ordered together
Put It On A Rod.
Straight answers
Spectra C59 — Straight Answers.
Which receivers does the Spectra C59 clamp fit?
Spectra lists the C59 as the HR320 rod clamp, and it is the general-purpose clamp in the HR320 user guide. It is not the clamp for the HL450 (that is the C45) or for the HL760, HL700 and CR700 (that is the C70).
Will the C59 clamp to a wooden pole as well as a grade rod?
Yes. Spectra’s HR320 guide says the general-purpose clamp attaches the receiver to a grade rod or a wooden pole.
How do I put the receiver on the C59?
Slide the clamp into the receiver until it clicks. Turn the jaws screw counterclockwise to open the jaws, slide the rod or pole between them, then turn the screw clockwise to lock it. The release tab lets the receiver back off the clamp.
Does the C59 have a bubble vial?
Not as it ships. It has screw holes for Spectra’s optional bubble vial kit, which Spectra lists as ATI993610-01 for the C45 and C59 (older HR320 guides call it 1277-6251S). The C70 is the clamp that comes with a vial. Call us if you want one.
How do I read grade off the rod with the C59?
The clamp has a reading edge that lines up with the receiver’s on-grade marking notch, so you read the rod at the edge of the clamp when the receiver shows on grade.
Downloads — Spectra Precision HR320 Receiver
Spectra Precision’s own documents, free to download. Authorized Spectra Precision dealer — Contractors-Tools.com.
HR320 Receiver User GuideAttaching the receiver with the C59 general-purpose clamp, controls, LCD and audio, specificationsDownload PDF →HR320 Guía del usuario (Español)The same HR320 user guide in SpanishDownload PDF →Laser Receiver Brochure — HL760, HL700, HL450, HR320Spectra’s receiver brochure covering the HR320 the C59 is made forDownload PDF →Call 1-877-866-5721
Family owned and operated. We set these systems up every week — tell us the machine and the laser you are running and we will spec it before you order.
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