Instrument Repairs | Servicing | Calibration | First-Class Machining
On the strength of almost five decades of professional experience, Tandy Instruments can repair, service and calibrate most measuring devices including speedometers, rheometers and mud pressure gauges – as well as antique clocks.
If replacement parts are no longer readily available – as is the case with many older or vintage pieces – we machine new parts to the necessary critical tolerances – ensuring your important or precious instrument performs as new.
Upon inspection of your device, we provide a written estimate for repairs, parts and materials, for your approval prior to work commencing. Should we later discover any potential areas of concern, we'll give you the option to repair or service up-front, before the operation or accuracy of your device is affected.
In order to guarantee all repairs, servicing usually involves a complete strip-down. All parts are cleaned and polished, lubricated, repaired or machined if necessary. After reassembly, the instrument is diligently calibrated to the relevant standards for that device.
- Type 'D' Mud Gauge 3000psi
- Re-built, reconditioned and recalibrated
- ONLY $2000
Speedometers
work in several ways, some by centrefrugle weights; others by magnets.
Modern types are electronic. The number of engine revs determines the
calibration of the speedometer and the revs are different from model to
model. Cable driven speedos can seize when the main shaft and body run out of lubrication, which in turn can break the cable
or damage the gear that drives the cable at the engine end.
Mud pressure gauges
have pressure applied to a diaphragm then to a pin and plate through to
a spring which operates the movement. All of these components need
critical assembly and calibration.
Rheometers
have a 'bob' that sits in the sample being tested. The bob is
surrounded by a rotor with a specific gap separating the two
components. The rotor is turned by hand crank or by RPM-calibrated
motor. As the rotor turns it also tries to turn the bob which is
connected to a dial indicator via a spring – which is of a
known tension – and it is this turning effect that gives the
viscosity reading.
Vintage clocks
stop working because of wear and tear and lack of lubrication. The
gears that drive the clock are fitted on to spindles which are located
into holes in the two plates that form the body of the movement. These
holes wear in a elongated shape and this traps eventually the spindle.
And because it is out of line and lubrication, correct rotation of the
gears becomes impossible.
Tandy Instruments
- Proprietor: George Tandy
- Rear 336 Cambridge Street
- Wembley, Perth WA 6014
- P 08 9387 6581
- M 0409 680 076
- E george@tandyinstruments.com.au
Speedometer Repairs
- Vintage and Veteran
- Chronometric
- Elliot Bros (Triple)
- Smiths
- Jaeger
- Veglia
- Harley Davidson
- BMW
- Ducati
- Mercedes
- AC
- VDO
- Kienzle vibe recorders
- XD Falcon
- Bonoville speedo & tacho
- and all cable-driven models
Rheometer Repairs
- Ofite Model 800
- Bariod Model 286
- Fann Models 34A, HC 34A, 35A 35SA
Mud Pressure Gauge Repairs
- Cameron - F & D Types
- Oteco - F & D Types
- Geolograph Pioneer
- DTH Products
- 'O' Drill
Old Clock Repairs
- Ansonia
- Cuckoo
- Grand Father
- Grand Mother
- Mantle
- Schatz 8 bells ships clocks & barometers
- Wall
- Westminster Chimes
Barometers
- All models repaired, serviced, calibrated
Old Ships Compasses
- All models refilled, repaired, serviced