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Please contact Parker Medical for current price and delivery.


Price of used Dynalyzer III,IIIA, IIIU high voltage unit includes  full internal rebuild done  and calibration. We replace light pipe, main divider rod, light pipe couplings, and plastic nuts. We will also replace the power supply post filter electrolytic capacitors in the Dynalyzer IIIA high voltage unit.  Digital display comes with line cord and new or near new  interconnect cable. Buy them now, as the Display has been discontinued .

Dr. Jonathan S. Shapiro invented the Dynalyzer™ at Machlett Labs, Stamford CT in 1975. The design today is largely the same, with the exception of changes necessitated by obsolete electronic components. Dr. Shapiro was electronic subsystems Engineering Manager at Machlett Labs for 11 years.

Greenwich Instrument Co. Inc. in Greenwich, CT has available for resale the following used Dynalyzer™ X-ray test equipment, and voltage dividers, which have been reconditioned calibrated. 12 month warranty does not cover damage from high voltage overload. Dynalyzer™ High Voltage Units (HVUs) have all been examined and rebuilt internally with new light pipe, divider rod, check nuts and couplings. New Voltage dividers 12 month warranty. Price does not include high voltage cables. . Other equipment 30 day return only.
See below.

All equipment is calibrated prior to shipment, so give us time to process your order. Domestic credit cards accepted. Annual calibration is recommended for all test equipment. All items subject to prior sale. Order now for best selection! 

December 19, 2018 Call or email for current price and availability.

Dynalyzer III or IIIA high voltage unit Rebuilt and calibrated:  This includes new light pipe, divider rod, check nuts and mA  transmitter coupling parts. Supplied with line cord and manual. Click on pictures for enlargements.  Dynalyzer III High Voltage Unit III (left) and IIIA (Right)

External link opens in new tab or windowDynalyzer IIIA high voltage unit||||
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1 wk.

Call for individual prices:
Dynalyzer High Voltage Unit (HVU)-subject to availability.
Radcal IIIU
Varian-Fischer IIIA
Machlett IIIA
Machlett III
Machlett Dyn II

Dynalyzer III digital display with or without printer, as available.  Calibrated.  Supplied with interconnect cable either new or like new at our option, line cord and manual . OEC interface modifications on some stock units.

External link opens in new tab or windowDynalyzer III digital display||||
1 wk.
Varian Dynalyzer III with Impact printer with RS232 or without printer, call for pricing.

Machlett III w/o printer, call for pricing, ask for OEC mod; with thermal printer, call for pricing. You may be supplied with a printer at our option, as stock allows.

Dynalyzer radiation probe set: Type 653 probe, int'f, cables . All tested for circuit functionality. 
 Call for pricing without calibration.
Victoreen 07-470  or Nuclear Associates 07-476 high voltage x-ray divider. Calibrated. 100,000 :1 ratio.  There are dents on side of can, but they work. poor high frequency response. Anode connection are tied together. Very stable dc function.
 Call for pricing. Limited supply.
 NEW GICI 2000/ Parker Medical H917 voltage dividers. All used units rebuilt internally and calibrated. 10,000:1 ratio direct to scope, 1,000:1 ratio emulates GE bleeder. Excellent frequency /pulse response. See new equipment section for spec sheets.
 Call for pricing.
Cables extra.2-4 week delivery
GE x-ray  Voltage dividers 46-145966G1.  Anode connections are separate. Good for CT.
 Calibrated - Call for pricing.
OEC AUTO CAL BOX and CABLES.                                                1 available - Call for pricing.

Ordering Info

Equipment is used and calibrated, except as noted. Dynalyzers and voltage dividers sold with one year warranty against operational defects. This equipment is used, and may have scratches and markings on it.  All equipment packed in 2 inch thick polyurethane foam pads. Copy of instruction manual provided.  Other equipment sold with 30 day return privilege, no other warranty.  email confirming order afdter to speaking with us to

All Dynalyzers, and voltage dividers have reprint manuals.
All merchandise in limited quantity and subject to prior sale.

EXPORT: Wire transfer in advance. Shipping collect. Equipment made in USA. No overseas credit cards, please, except known accounts!