Sean you bring up a great point about the confusing nomenclature.
I read a long and detailed article once (don’t remember the author) which seemed to establish beyond doubt that the name “border pipe” is bogus. If I remember correctly, it was ONE family that had ONE old set of Lowland pipes, that said that they remembered somebody in the family calling them “border pipes”. From that humble beginning, the name has recently spread to cover what used to be called “Lowland pipes”.
Not that the term “border pipe” is universal: I owned three nearly identical chanters that were called three different things by their makers: a Hamish Moore “reel” chanter, a Garvie “session” chanter, and a Jon Swayne “Lowland” chanter.
What interests me (and is not really off-topic, I dont’ think) is the four sizes of pipes made by the top Highland pipe makers in the 19th century.
Glen’s 1849 list shows:
I. The Great Highland or military bagpipe
II. Half-size or reel pipe, blown with the mouth or bellows
III. Lovat reel pipe, blown with the mouth or bellows
IV. Highland miniature pipe
By 1860 this had changed to:
- The Great Highland or military bagpipe
- half-size or reel pipe, blown with the mouth or bellows
- second size reel pipe, blown with the mouth or bellows
- Highland miniature pipe
but by 1871 this had changed to:
- Great Highland bagpipe (offered in a range of mountings including silver)
- half-size or reel pipe (bellows not offered; offered in the same range of mountings as the Great Highland bagpipe)
- second size reel pipe (bellows offered as an option; only ivory mounted is mentioned)
- the Highland miniature, or Chamber, pipe (only ivory mounted mentioned)
Peter Henderson’s 1888 catalogue lists their pipes in the same way as the Glen 1871 list.
I assume that the “half-size or reel pipe” is what we today call the “3/4 pipe”, which actually are about 7/8 the size of the Great Highland bagpipe. Many old sets exist, often mounted in engraved silver as per these 19th century pricelists.
But what was the “Lovat reel pipe” or “second-size reel pipe” which was always offered with bellows as an option? Which was offered only ivory mounted? Which had a cost intermediate between the “half-size pipe” and the “miniature pipe”?
By the 20th century this “second size reel pipe” had dropped off all the maker’s lists, leaving only the “Great Highland”, “half-size or reel”, and “miniature” pipes.
Just to show, here are my three sizes, the Great Highland, an old set of Glen “half-size or reel” pipes (what today are called 3/4 pipes), and an old set of “miniature Highland pipes” (what today are called smallpipes):

The “miniature” set is fully mounted in real ivory, exhibits beautiful craftsmanship, and was purchased on Ebay for $200.