Altman was founded in Yonkers, New York in 1953, making equipment for schools and small theatres. In 1966 it fell into rock'n'roll, wrapping a steel can around the PAR64 lamp for the Rolling Stones.
This, the 360Q, was the company's take on a Leko (this originally a brand name for a profile spot invented by Joseph Levy and Edward Cook of Century Lighting, but which became the generic US term for this type of fixture). By using die-cast construction the fixture was more rugged, more reliable and easier to build than its rivals. The original 360 had an angled lamp-house much like the British Patt 264. The 360Q moved to an axial lamp mounting for the new generation of Quartz (hence the Q) lamps.
You chose the body with the lensing to give the beam angle you needed, but had to know the lens codes - diameter x focal length - from 4.5x6.5 (giving a 55° beam) through 6x9 (37" beam) all the way up to 6x22 (11*) for the longest throws.
Broadway's standard fixture until the coming of the Source Four, US shows brought them to the UK for designers looking for that extra punch.

Altman 360Q
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