Working together with his father and subsequently with his younger brother and nephew (George Dollond) he successfully designed and manufactured a number of optical instruments.

Dollond telescopes, for sidereal or terrestrial use, were amongst the most popular in both Great Britain and abroad for a period of over one and half centuries.

Another design was for the Peter Dollond compound monocular Eriometer around 1790 used to accurately measure the thickness and size of wool fibres.

[4] Dollond's reputation, especially with his father being a Fellow of the Royal Society as a result of his development and patenting of the achromat, provided the company with the de facto right of refusal on the best optical flint glass.

[6] This privilege permitted Dollond to maintain an edge in quality over competitor's telescopes and optical instruments for many years.