We have moved to Danbury, CT to new larger facilities.

           GiCi is ISO 17025:2017 Accredited by A2LA

We are fully operational and staffed at our new location, and can expeditiously handle your calibration and repair requests. Dr. Jonathan Shapiro remains a consultant to GiCi.

We have a large selection of used Dynalyzer high voltage units and digital displays. They will be repaired as needed to insure a long life.

Parker Medical manufactures the H917  ( formerly GiCi 2000) voltage divider for bi-polar x-ray generators, and the H1049 monopole divider, available with a variety of high voltage connectors.

Phone: 860-350-4304
Fax: 860-350-3432

                                         Greenwich Instrument Co. Inc, a division of
Parker Medical Inc.
43 Old Ridgebury Road
Danbury, CT 06810

Parker Medical is a leading supply of X-Ray high voltage cables, connectors, components and other assemblies. Consult the PMI web site for more info:

Complete used set of Dynalyzer IIIA, some upgraded to Radcal IIIU version. high voltage unit, Dynalyzer III Digital Display, Interconnect cable, line cords, copies of instruction manual, and heavy duty as-is carry case for each. Call for pricing. See used equipment tab.

Units are calibrated to spec. Limited 12 month guarantee, repair or replace at our option. These high voltage units are  internally inspected and rebuilt  and calibrated prior to shipping.


Don’t Let a Surprise Audit Ruin Your Day; Calibrate Now! Over 30 Years and >20,000 Calibrations!

No one has serviced Dynalyzer™ longer or better than Greenwich Instrument Co. Inc. in Greenwich, CT. We offer exceptionally fast turn around on your equipment calibration. Dr. Jonathan Shapiro, President and Chief Technical Officer (CTO) headed up the Dynalyzer design team at Machlett Labs in 1976, and has been associated with the Dynalyzer ever since.

We have used, rebuilt Dynalyzer™ sets ready to go. We also have the New GiCi 2000/Parker Medical H917 voltage divider, high voltage test cables, and Hologic Mammo test cables.


The high voltage units have been mechanically upgraded with new Delrin plastic insulating parts. Virtually all old Dynalyzer™ need a rebuild to replace broken or nearly broken Lexan parts. Contact us to rebuild your Dynalyzer tank. When it does fail, this may be one of the repair options. We put time and money into our rebuilt equipment, which is much better than used. Dynalyzer™ and voltage dividers calibrated, serviced, and sold by the inventor of the Dynalyzer™, Dr. Jonathan S. Shapiro, PhD.

Please request an RMA number. write or call 1-800-998-4424

Gici 2000 Voltage Dividers, Parker Monopole Dividers

1. New GiCi 2000 ( H917) Dividers, tested +/- 75KV. +/-82.5 kv test on request.

2. New ParkerH1049-P1 Monopole dividers, cal data to 150 KV, hi pot tested to 165 KV, with extended Federal Standard connector. Also available with R24 HV connector. These are single section dividers also available with 6 pin extended federal standard connectors for use with GE CT scanners.   ISO 17025 accredited calibration.

Differences between 17025 and 9001

We also calibrate MAS meters, scopes and DVMs. We sell used- rebuilt Dynalyzer™ to customers worldwide. We are buying used Dynalyzer™ IIIA high voltage units. We offer excellent used equipment built from what we buy . We replace all old Lexan internal components of the Dynalyzer high voltage unit with Delrin, which does not develop stress cracks. Stronger than new.

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