1x Ludlum Model 3 Survey Meter
✔️ Guaranteed 100% functional and ready to use upon arrival
✔️ Configured for use with a standard 900V Geiger probe (unless otherwise requested)
Probes are sold separately—ask about discounts for complete sets.
When a probe is purchased with a meter, you’ll receive one free connecting cable per meter (e.g., 1 meter + 2 probes = 1 cable).
The included meter face will be the one currently on the unit. The count rate scale will be adjusted for accuracy (unless also purchasing a probe).
If purchasing with a probe, we will swap the meter face to match the configuration if a correct one is available. Custom faces can also be special-ordered at an additional cost.
Note: Dose rate scales are probe- and isotope-specific. These meters are sold bare, and any dose rate printed on the face is not accurate without proper pairing. If ordered with a probe, count rate will be set and optional dose rate calibration can be performed by a third-party lab for an additional fee.
Each unit is fully tested, adjusted, verified, and documented before shipping.
You’ll receive photos of your exact meter being tested through all ranges using a calibrated Ludlum Model 500 pulser.
We guarantee every unit to be fully functional and free of defects for one year from delivery. If any issue arises, we’ll work with you to resolve it.
This guarantee does not cover abuse, neglect, or improper handling. These are rugged, precision instruments, but they are not indestructible.
We also offer reasonable repair services for most damage, if needed.
Well-maintained units with clean internals and bright, corrosion-free battery contacts
Verified operation at 900V ±10% (unless other voltage is requested)
Each range tested for pulse count accuracy on the analog display
You will receive a random probe clip on the handle unless ordering with a specific probe.
Detailed photos of each unit prior to purchase are available upon request
These are Pre-Loved meters that may have scuffs and bumps from their past. They may also have some adhesive from past labels. These have been cleaned and fully tested but some minor cosmetic issues may remain.
ALL "flip door" style check source holders are removed to prevent issues when shipping internationally. This may leave 4 small holes in the lower housing if this is the case, you will be notified before shipping!
Search the model number online for detailed technical specifications
Larger individual components inside housing (resistors, capacitors, and similar)
Covered calibration adjusters located together to the right of the rotary knob
Silk-screened text on the faceplate
Hidden screws securing the meter movement
“Slide-style” battery compartment latch
Small "can" size (electronics housing)
Listing is for one fully tested Ludlum Model 3, as shown in this listing’s photos
Batteries are not included
Discounts available for multiple purchases
Orders ship promptly after payment clears
International buyers: Please reach out to confirm actual shipping rates—eBay's calculator can sometimes be inaccurate
Due to the item’s value, signature confirmation may be required upon delivery
Each unit is individually photographed and documented prior to shipment
Rough handling or abuse will void the guarantee
Licensed, traceable calibration is available for an additional fee.
📩 Feel free to contact us with any questions or for additional information!
Limited inventory. Availability is subject to prior sale.