Intelligent Darkroom Tools

Intelligent Darkroom Tools - designed by photographers for photographers.

Enlarger timers, enlarging exposure meters, densitometers and accessories for the photographic darkroom, thoughtfully designed and built with care. Watch the demonstration videos showcasing our products!

After 20 years, RH Designs proprietor Richard Ross has retired, and as a result SDS have taken over the manufacture and sale of RH Designs products. This web site will remain as a source of reference and technical support but all ordering links will be directed to the SDS web site where you will be able to complete your purchase. More information is available on the About and Ordering pages on this site.

Thanks for visiting RH Designs - Dr Richard Ross, proprietor

StopClock f-stop Enlarger Timers

ZoneMaster II Enlarging Meter

Analyser Enlarging Meter/Timers

StopClock Timer Range

ZoneMaster Enlarging Meter

Analyser Meter/Timer Range

ProcessMaster II Process Timer


SplitGrade Enlarging System

ProcessMaster II


Heiland SplitGrade System

PaperFlasher Flashing and Fogging Aid

Hand Held Safelights

dishwasher-thermometer thmb

PaperFlasher II

Safelight Torch Range

Accessories and Sundries

Quick Product Links

Analyser Pro
Analyser 500
new01 LED light source
PaperFlasher II
SafeTorch (b+w)
SafeTorch (colour)
SplitGrade System
StopClock Professional
StopClock Vario
StopClock 500
TAS Film Processor
TRD2 Densitometer
TRDZ Densitometer
Waterproof Thermometer
ZoneMaster II

Quick Info Links

About RH Designs
F-stop Printing Primer
The Grey Scale Display
Split Grade Printing
Flashing and Fogging
Meter Calibration
User Manuals
Updates and Downloads
Ordering Information

Search our site

[Home] [About] [Products] [Support] [FAQ] [Ordering] [Contact] [Digital] [Links]

 Contact us

Site design and content by Richard Ross and copyright 1994-2012 RH Designs. Last update 11 November 2015.