Scientific Digital Imaging doubled its first-half profit after selling more of its technology products to the life sciences, healthcare and astrology industries, while expanding margins.
Pre-tax profit increased to £846,000, up from £410,000 a year earlier, while revenue grew by 34% to £6.55m.
Gross margin increased to 67.0% from 63.6%.
"The first half of the financial year has seen the group report substantial growth and we are pleased that trading in the current second half continues in line with management expectations," chairman Ken Ford said.
"We have been pleased with the performance of Applied Thermal Control, which was acquired in August 2017."