hi ..
how about what does ATC stand for ?

I have called them 'tooth' fuses, because they look like a tooth with two roots.

I'lll say this about them..
the 'good kind' have metal test points on them. 
there are some styles that do not.
  ----- Original Message ----- 
  From: Loren Busch 
  To: Scott Daniel - Turbovans 
  Cc: vanagon@gerry.vanagon.com 
  Sent: Tuesday, November 08, 2011 9:08 PM
  Subject: Re: Re: Harbor Freight Circuit Tester was D15 connector revealed

  On Tue, Nov 8, 2011 at 8:47 PM, Scott Daniel - Turbovans <scottdaniel@turbovans.com> wrote:

    hi Loren,
    I see no reason to have both..
    for me, I sure hope I'm not working on any car with those smaller ATC fuses.

    so far I've found out............ it takes a very tiny phillips screw driver to get the battery cover off..
    it takes a weird 12 battery ( included ) ..it's like a short AAA batt.
    and 3...
    it's limited to a 10 second test at a time. 
    the   info with it says 'resolution' is 0.1 amp ..
    so I suppose it can read that low, which could be useful. 
    not too big an investment in any case. 
    Scott

  I agree, I can't think of any reason to have both.  I know that I have something someplace (just can't remember what it is) that uses the Mini spade fuses but I doubt that I'd ever need that instrument for whatever it is :)
  I'll be exchanging it tomorrow
  BTW, I looked up the 'official' names of the types of fuses.  The ones we use in the later Vanagons (and a whole bunch of other vehicles and 'stuff')  are caller ATC/ATO and little ones just called 'Mini'.  Now a new question, what's the difference between an ATC fuse vs. an ATO fuse?