measurments  for sonar case

i need measurements for a sonar case, i need to have some one build me a aperture cap for it so measurements needed any help !!!!!



i just found this can any one let me no if its the right size for the aperture cap

Laser specifications

Name: Sonar Blu-ray
Size: 20mm x 123mm
Wavelength: 405nm
Laser body: 6061-T6 Aircraft-Grade Aluminum
Transverse mode: TEM00
Output power: 20mW
Beam Divergence: 1.5mRad
Beam Diameter: 2.5mm @ aperture
Power consumption: 800mA
Power supply: 2xCR123A
Battery Lifetime: 60 min
Switch: Momentary On/Off Button
Expected Lifetime: >5,000 hours
Warranty: 3 months

I don't have one here any more, but IIRC the aperture cap screws into the housing on the Sonar

Peace,
dave

So you need the diameter?

when i get it ill see if a forum member can make a cap for it or some thing

any thing so i can ask around to make me a aperture cap for the sonar laser

maybe darkhorse? :-?

thats who i had in mind, i no he is good at making heatsinks ect...