The Royal Mail was sold with either 15 lenses for 15 simultaneous exposures or with 3 lenses for 3 exposures. The 3 lens model was advertised at the 'Royal Mail Panel Camera'.

The 15 lens model is usually fitted with a sliding catch under the shutter release to set the shutter at 'T'. Early models like this example have a simple clip to hold down the release knob. Late models had a removable front panel allowing other lens combinations to be fitted. Two sizes of camera were available, quarter-plate and 9 x 12 cm. The camera could be fitted to a stand with an easel to hold the photograph to be copied, this was available from around 1909.

Printing-out paper with stamp-like perforations and border negatives to resemble stamps were sold by Butcher.