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REGULATING TOOLS
DAMPER REGULATOR
With this regulator being 12-1/2” long, upright damper wires
can be bent by inserting this tool into the action from the
side, several notes away. Slot at tool’s end is 1/8” wide.
Chrome plated.
No. 92 - Damper Regulator. Each
SPRING HOOK
A general purpose tool used for positioning all types of action
springs. Hook is polished steel, handle is 2” long and plastic.
No. 91A - Spring Hook, 5” long. Each
No. 91B - Spring Hook, 8” long. Each
GRAND SPRING ADJUSTER
6” long, with slender wood handle. An essential tool for
grand action work.
No. 3148 - Grand Spring Adjuster. Each
SPRING HOOK
A multi-purpose tool that adjusts tension on grand repetition
springs as well as positioning hammer and damper springs on
upright pianos. Nickel plated, 6-1/2” long.
No. 91C - Spring Hook. Each
STRAIGHT SPRING ADJUSTER
9” long.
No. 3106 - Straight Spring Adjuster. Each
HART SPRING TOOL
Developed by piano technician, Glen Hart, this patented
spring tool is considered the best one in the industry.
Measuring 7” long with a plastic sleeve handle, the tool is
made of stainless steel and will last a lifetime. Referring to
the diagram, notice the circular notch (1) that allows tool use
in any position. All types of upright and grand piano action
springs can be manipulated from any angle without any
worry about kinking. Another unique advantage of this spring
tool is shown as item (2) in diagram. The distance from the
flat side of tool to the notch equals the measurement from the
side of the repetition lever to the center of the spring seat.
Grand repetition springs can be removed and replaced
without any guesswork.
No. 895 - Hart Spring Tool. Each
HART VOICING TOOL
Through the string grand voicing tool for fine voicing of
individual hammers. This slender 9” brass tool allows easy
access to hammers without pulling out the action. Needle
is held by a set screw, and is replaceable.
No. 897 - Hart Voicing Tool. Each
MASON & HAMLIN WRENCH
Originally, this tool was designed to tune Mason & Hamlin
“screw stringer” pianos. Measuring 4-1/2” long and 3/8”
wide, this chrome plated wrench is used to adjust the jack
regulating screw on current day grand pianos without
removing the action.
No. 19 - Mason & Hamlin Wrench. Each
GRAND JACK SCREW REGULATOR
Measuring 4” long this nickel plated wrench is for adjusting
let-off in a grand piano without removing the action.
No. 78 - Grand Jack Screw Regulator. Each
ROCKER SCREWDRIVER
Made from chrome plated tool steel, this screwdriver is 8”
long and has 5/16” wide blades.
No. 81 - Rocker Screwdriver. Each
CAPSTAN AND KEY PIN REGULATOR
A two in one tool that can regulate both the front key pin and
capstan screw. 7” long, chrome plated.
No. 82 - Capstan & Key Pin Regulator. Each
CAPSTAN SCREWDRIVER
Made from stainless steel this capstan regulator is 8” long.
No. 83 - Capstan Screwdriver. Each
CAPSTAN REGULATOR
Designed primarily for regulating the dowel type capstans on
Yamaha upright pianos. The end of this tool is very narrow to
accommodate the small holes in the capstan dowels. Overall
length is 11-1/2” that includes a 3-1/2” wood handle and an
8” chrome plated shaft.
No. 88 - Capstan Regulator. Each
SQUARE CAPSTAN SCREW WRENCH
A double sided tool with one end having a 1/8” wide
opening, the other end 3/16” wide. Chrome plated.
No. 84A - Capstan Screw Wrench, 4” long. Each
No. 84B - Capstan Screw Wrench, 8” long. Each