English: Gama Supreme and ASA Maya fountain pens. The ASA Maya is the smaller pen.

Dimensions for the Gama Supreme
Length capped: 165 mm
Length uncapped: 151.5 mm
Length posted: 196.5 mm
Cap length: 75.5 mm
Cap diameter: 19 mm
Cap breather hole(s): 1 hole for pressure equalization during uncapping
Barrel length: 104 mm
Barrel diameter: 17.3 mm
Section length: 22 mm
Section diameter: 15.5 mm tapers to 13.4 mm
Feed diameter: 6.35 mm (¼ inch)
Nib exposed length with the Ambitious Indian № 12 Iridium Point: 26.5 mm
Ink capacity: 3.5 ml (usable volume for storing ink in the barrel)
Barrel weight: 29 g (filled with ink)
Cap weight: 13 g
Total weight: 42 g (filled with ink)
Turns to uncap: 5½ turns

Dimensions for the ASA Maya 3 in 1
Length capped: 149 mm
Length uncapped: 132 mm
Length posted: 175 mm
Cap length: 69 mm
Cap diameter: 15.9 mm
Cap breather hole(s): 1 hole for pressure equalization during uncapping
Barrel length: 90 mm
Barrel diameter: 14.2 mm
Section length: 18.7 mm
Section diameter: 12.6 mm tapers to 11.3 mm
Feed diameter: 6 mm
Nib exposed length with an installed JoWo #6 nib unit: 23.3 mm
Ink capacity: 3.4 ml (usable volume for storing ink in the barrel in eye dropper mode)
Barrel weight: 16 g (with a Schmidt K5 converter filled with ink installed)
Cap weight: 9 g
Total weight: 25 g (with a Schmidt K5 converter filled with ink installed)

Turns to uncap: 2 turns