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    Re: Bubble sextant parts and calibration
    From: Gary LaPook
    Date: 2013 Dec 4, 23:15 -0800

    The small flanged bulbs type T-1 3/4 flanged bulbs come in several voltage ratings but they all put out about 12 watts.

    Greenlee 327    28 volts
    JKL        328    6 volts
    Sylvania  330    14 volts

    The larger bayonet mount bulbs, type T-3 1/4 bayonet bulbs also come in different voltages and power ratings.

    JKL         313    28 volts    56 watts
    JKL        1891    14 volts    36 watts
    JKL        1892    14 volts     8 watts
    JKL        1893    14 volts    49 watts

    JKL           44     14 volts     17 watts

    All are available for less than a buck each at :


    From: Noell Wilson <noell_wilson@southwire.com>
    To: garylapook@pacbell.net
    Sent: Wednesday, December 4, 2013 10:54 AM
    Subject: [NavList] Re: Bubble sextant parts and calibration

    I found a bulb and considered it for a MK IX but Bill Morris (I think) said he thought it would be too dim. I later got the installed bulbs working and never went any further.
    There is a photo of the bulb and there may be a coiled filament wire. I can't tell for sure.
    Regards, Noell
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