A piano maker is not a tuner.  Different skills.

A Maker would not necessarily own a tuning hammer... and probably not.

Just as a tuner would probably not own a hand plane.

Studley being a maker, would probably not own a tuning hammer.... he would have
sent the piano over to the tuners and they would string it up and tune it.

A regulator is some part inside the piano..... If you wish to follow this
thought, look it up.... or go here:

https://shacklefordpianos.com/blogs/blog/6-things-about-piano-regulation

From that page..... and very nerdy

*Regulation is the adjustment of the mechanical aspects of the pianos* to
compensate for the effects of wear, *the compacting and settling of cloth, felt,
and buckskin, as well as dimensional changes in wood and wool parts due to
changes in humidity.*

*The three systems involved in regulation are the action, trapwork and damper
system.*

*The action is the mechanical part of the piano* *that transfers the motion of
the fingers on the keys to the hammers that strike the strings.* It is comprised
of over 9,000 parts which require adjustment to critical tolerances to be able
to respond to a pianist's every command.

*The trapwork is the assemblage of levers, dowels and springs* *that connects
the pedals to the action affecting sustain and dynamics.*

*The damper system is the mechanical part of the piano that stops the vibration
of the string* when you release the key and is controlled by the key and pedal
systems.

Frank Filippone

BMWRed735i@G...