10 years and counting

2012 marked 10 years of the microstepper

10 years of the microStepper

Electro-mechanical stage

The history of the electro-mechanical stepping stage

Electro-mechanical stepper

Developing PETROG

How PETROG is moving forward


Case study

Embarcadero have a case study on Conwy Valley Systems’ use of Delphi to build PETROG.

Delphi by Embarcadero


A collection of presentations that reference PETROG.”

Presentations Referencing PETROG

Replacing point counter

Replacing your old Swift automatic point counter

Replacing a point counter

Point counting

How point counting is used in geology.

Point Counting

Why choose CVS ?

Why choose Conwy Valley Systems ? Read about the PETROG development history.

Queen’s Award 2011

In 2011 Conwy Valley Systems was awarded the Queen’s Award for Enterprise : Innovation

Queens Award 2011

Welsh slate

Recognition for Welsh slate

Welsh Slate

International Cement Review

Reprint of “Precision with point counting” from October 2021 issue

Trask sorting

Explanation of the Trask sorting co-efficient.

Trask sorting


PETROG is being used with ceramics.

Ceramics in Archaeology


Vol. 19,#1-3, 2022

Delphi by Embarcadero

Cameras and PETROG

The use of microscope cameras with PETROG.

Cameras and PETROG

Research Papers

A collection of published papers that reference PETROG.”

Papers Referencing PETROG (most recent)

Features and articles about PETROG and digital petrography in general

PETROG and digital petrography

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Conwy Valley Systems Limited,

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PETROG includes patent protected technology.