Chairman, 'Editorial: Chairman’s Chat', p.1.

E. Delalande, 'Editorial: Homage to Dominique Delalande (1935-2019)', p.1.

P. Brenni, 'Editorial: Cover', p.1.

P. Brenni, 'Written by Lightning: A short story of lightning recorders: ceraunographs, electrographs, klydonographs, Part 1: From Becaria's Ceraunograph to Gergely Palatin's Detector', pp.2-10.

S. Boone, 'The Solaro Family of Instrument Makers and Frisian Science: Links between English, Dutch and Italian science', pp.11-20.

B. Jardine, 'Book Reviews: Mathematical Instruments in the collections of the Bibliothèque Nationale de France, (Turnhout/London, 2018)', pp.20-21.

L. Patard, 'Collardeau and His Firm of Precision Instruments Part II: The Protagonists in the Collardeau Firm', pp.22-27.

W. D. Hackmann, 'In the Beginning, There Was a Dog Called 'Radio Rex'', pp.28-31.

M. Cowham, 'The Scaphe Dial', pp.32-33.

M. Beech, 'Unweaving A Philatelic Meme: Lord Rutherford and the narrativium of science', pp.34-38.

Editor, 'Current and Future Events', p.38.

A. J. Turner, 'The Dangers of Instrument-making', pp.39-40.

S. Griffin, 'The San Zeno Wheel: A wooden volvelle and monastic timekeeping in fifteenth-century Verona', pp.41-43.

W. D. Hackmann, 'Book Review: R. Marshall, Three Centuries of Manchester Physics Vol. 2 1870-1907, (2018)', p.44.