Thanks, I could have sworn I had tested that. With my new setup, I
still have trouble with some characters in math mode. Specifically, I
don't see the \prime and \doubleprime characters in math mode, and I
can't use \wedge as a footnote symbol.

Consider this commented example, pdf result attached.

/MJO


    % define the characters to use for Garamond in math mode
    \definefontfamilypreset
        [math:somesymbols]
        [range={0x0002A-0x0002E,0x000A7,0x000B6,0x000D7,0x000F7,0x02020-0x02021,0x02212,0x02219-0x02226,0x02228-0x02265,0x02012,0x0003C-0x0003E,0x0007C},
            tf=style:regular,
            offset=lowercasenormal,
        ]

    \definefallbackfamily[mainface][math][Adobe Garamond
Pro][rscale=1.05,range=digitsnormal]
    \definefallbackfamily[mainface][math][Adobe Garamond
Pro][rscale=1.05,range=lowercasenormal]
    \definefallbackfamily[mainface][math][Adobe Garamond
Pro][rscale=1.05,range=lowercaseitalic]
    \definefallbackfamily[mainface][math][Adobe Garamond
Pro][rscale=1.05,range=uppercasenormal]
    \definefallbackfamily[mainface][math][Adobe Garamond
Pro][rscale=1.05,range=uppercaseitalic]
    \definefallbackfamily[mainface][math][Adobe Garamond
Pro][rscale=1.05,range=math:somesymbols]

    \definefontfamily[mainface][serif][Adobe Garamond Pro]
    \definefontfamily[mainface][math][TeX Gyre Termes Math][scale=0.9]

    \setupbodyfont[mainface,11pt]

    % footnotes
    \defineconversion[avhset][\m{\wedge},\m{\prime}]
    \setupnotation[footnote][way=bypage,numberconversion=avhset]

    \enabletrackers[fonts.missing]

    \starttext

    $D\prime = 0.98$          % <-- no \prime in output

    $D\doubleprime = 0.98$    % <-- no \doubleprime in output

    wedge\wedge\footnote{wedge}   % <-- lua stats  > unknown math
characters: ∧ (U+02227) (n=2)

    prime\prime\footnote{prime}   % <--

    \stoptext

> On 4/12/2018 6:17 PM, Magnus J wrote:
> > I use Adobe Garamond Pro in combination with Termes Math for math (the
> > latter for missing glyphs, Garamond is not very complete). How can I
> > scale size of Termes Math without decreasing the size of the Garamond
> > glyphs in math mode?
> >
> > /MJO
> >
> >
> >      % define the characters to use for Garamond in math mode
> >      \definefontfamilypreset
> >          [math:somesymbols]
> >
> >
[range={0x0002A-0x0002E,0x000A7,0x000B6,0x000D7,0x000F7,0x02020-0x02021,0=
x02212,0x02219-0x02226,0x02228-0x02265,0x02012,0x0003C-0x0003E,0x0007C},
> >           tf=style:regular,
> >           offset=lowercasenormal,
> >          ]
> >
> >      \definefallbackfamily[mainface][mm][Adobe Garamond
> > Pro][math:digitsnormal]
> >      \definefallbackfamily[mainface][mm][Adobe Garamond
> > Pro][math:lowercasenormal]
> >      \definefallbackfamily[mainface][mm][Adobe Garamond
> > Pro][math:lowercaseitalic]
> >      \definefallbackfamily[mainface][mm][Adobe Garamond
> > Pro][math:uppercasenormal]
> >      \definefallbackfamily[mainface][mm][Adobe Garamond
> > Pro][math:uppercaseitalic]
> >      \definefallbackfamily[mainface][mm][Adobe Garamond
> > Pro][math:somesymbols]
> >
> >      \definefontfamily[mainface][rm][Adobe Garamond Pro]
> >      \definefontfamily[mainface][mm][TeX Gyre Termes Math][scale=0.9]
%
> > <-- scaling here...
> >
> >      \setupbodyfont[mainface,11pt]
> >
> >      \starttext
> >      100
> >
> >      $100$ % <-- leads to math mode that is smaller than text, even for
> > Garamond glyphs
> >      \stoptext
>      \definefallbackfamily[mainface][math][Adobe Garamond
> Pro][rscale=1.05,range=digitsnormal]
>      \definefallbackfamily[mainface][math][Adobe Garamond
> Pro][rscale=1.05,range=lowercasenormal]
>      \definefallbackfamily[mainface][math][Adobe Garamond
> Pro][rscale=1.05,range=lowercaseitalic]
>      \definefallbackfamily[mainface][math][Adobe Garamond
> Pro][rscale=1.05,range=uppercasenormal]
>      \definefallbackfamily[mainface][math][Adobe Garamond
> Pro][rscale=1.05,range=uppercaseitalic]
>      \definefallbackfamily[mainface][math][Adobe Garamond
> Pro][rscale=1.05,range=math:somesymbols]
>
>      \definefontfamily     [mainface] [serif] [Adobe Garamond Pro]
>      \definefontfamily     [mainface] [math]  [TeX Gyre Termes Math]
>
>      \setupbodyfont[mainface]
>
>
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