Calibration Collection

Hydrometers and Hygrometers C017 / 3433
Plate from 18th century encyclopedia showing illustrations of hydrometers and hygrometers. A hydrometer is an instrument used to measure the specific gravity (or relative density)

Convair F-106B-31-CO Delta Dart 57-2507
Convair NF-106B-31-CO Delta Dart 57-2507 (msn 8-27-01) at NASA Lewis Research Center, Lewis Field, Cleveland, OH. registered as NASA 607 Built April 1958

Calibration
Treechild

Hawker Siddeley Andover C. 1 XS643
Royal Air Force - Hawker Siddeley Andover E.1 XS643 (msn Set 27), Airways and NavAid calibration aircraft of No.115 Squadron. Date: circa 1984

Hawker Siddeley Andover C. 1 XS639
Royal Air Force - Hawker Siddeley Andover E.1 XS639 (msn Set 23), Airways and NavAid calibration aircraft of No.115 Squadron. Date: circa 1984

Gloster Javelin FAW. 9 XH897
Gloster Javelin FAW.9 XH897 / A, of the A&AEE Boscombe Down. This Javelin was used as a chase aircraft and for airspeed calibration, fitted with an accurate calibrated instrument system

English Electric Canberra B. 2 WJ814 M
Royal Air Force - English Electric Canberra B.2 WJ814 M, of No.98 Squadron, based at RAF Cottesmore, used for radar calibration of the United Kingdom Air Defence Ground Environment. Date: circa 1970

Hawker Siddeley Andover C. 1 XS643
Royal Air Force - Hawker Siddeley Andover E.1 XS643 (msn Set 27), Airways and NavAid calibration aircraft of No.115 Squadron. Date: circa 1984

Piaggio PD-808RM MM62016
Aeronautica Militare - Piaggio PD-808RM MM62016 (msn 523), of 14 Stormo, in the hangar at Pratica di Mare AB. (RM - Radiomisura - radio measurements'- radio/radar calibration aircraft)

Alenia G. 222RM MM62141 - 14-22
Aeronautica Militare Italiano - Alenia G.222RM MM62141 - 14-22 (msn 4076), of 14 Stormo, at Pratica di Mare Air Base. (RM - Radiomisure - radio - radar - nav-aid calibration)

Alenia G. 222RM MM62140 - 14-21
Aeronautica Militare Italiano - Alenia G.222RM MM62140 - 14-21 (msn 4069), of 14 Stormo, at Pratica di Mare Air Base. (RM - Radiomisure - radio - radar - nav-aid calibration)

Piaggio-Douglas PD. 808RM MM62017
Aeronautica Militare - Piaggio-Douglas PD.808RM MM62017 (msn 524), of 14 Stormo, at RAF Cottesmore for the Royal International Air Tattoo in July 2000

Aeritalia G. 222RM MM62140 - 14-21 & MM62141 - 14-22
Aeronautica Militare - Aeritalia G.222RM MM62140 / 14-21 & MM62141 / 14-22 (msn 4069 & 4076), of 14 Stormo - 8 Gruppo. (RM - Radiomisura - radio measurements')

Aeritalia G. 222RM MM62141 - 14-22
Aeronautica Militare - Aeritalia G.222RM MM62141 / 14-22 (msn 4076), of 14 Stormo - 8 Gruppo. (RM - Radiomisura - radio measurements')

Piaggio-Douglas PD. 808RM MM62016
Aeronautica Militare - Piaggio-Douglas PD.808RM MM62016 (msn 523), of 14 Stormo (RM - Radiomisure - radio / radar / nav-aid calibration). (Aeronautica Militare - Italian Air Force) Date: circa 2000

Aeritalia G. 222RM MM62140 - 14-21
Aeronautica Militare - Aeritalia G.222RM MM62140 / 14-21 (msn 4069), of 14 Stormo - 8 Gruppo. (RM - Radiomisura - radio measurements')

Quadrans Magnus Chalibeus page from the Atlas Major, 1662 (coloured engraving)
XOT366481 Quadrans Magnus Chalibeus page from the Atlas Major, 1662 (coloured engraving) by Blaeu, Joan (1596-1673); Private Collection; (add.info.: From the first edition; published in Amsterdam; )

Search of the perfect time
Antonio Grambone

Ultrasound hydrophone calibration C016 / 6470
Ultrasound hydrophone calibration equipment. This equipment is used to calibrate hydrophones (underwater microphones) that are used to detect and measure ultrasound waves

Ultrasound hydrophone calibration C016 / 6474
Ultrasound hydrophone calibration equipment. This equipment is used to calibrate hydrophones (underwater microphones) that are used to detect and measure ultrasound waves

Ultrasound hydrophone calibration C016 / 6473
Ultrasound hydrophone calibration equipment. This equipment is used to calibrate hydrophones (underwater microphones) that are used to detect and measure ultrasound waves

Ultrasound hydrophone calibration C016 / 6471
Ultrasound hydrophone calibration equipment. This equipment is used to calibrate hydrophones (underwater microphones) that are used to detect and measure ultrasound waves

Ultrasound hydrophone calibration C016 / 6475
Ultrasound hydrophone calibration equipment. This equipment is used to calibrate hydrophones (underwater microphones) that are used to detect and measure ultrasound waves

Ultrasound hydrophone calibration C016 / 6476
Ultrasound hydrophone calibration test. Researcher using equipment to calibrate hydrophones (underwater microphones) that are used to detect and measure ultrasound waves

Digital camera sensitometry C014 / 2085
The imaging characteristics of a digital camera can be assessed by using the sensitometric methods developed for silver-based photographic systems

Bank of Weston cells C016 / 2041
Bank of Weston cells. These electrochemical cells produce a stable voltage used as a standard to calibrate voltmeters and define the SI unit for electromotive force (the volt)

Marine fuel analysis. Industrial researcher carrying out a calibration test on a hydrogen sulphide (H2S) analysis machine (vapour phase processor, VPP)

Surface texture measurement C016 / 3805
Surface texture measurement. Optical instrument, based on a light microscope, being calibrated for areal (three-dimensional) topography

Surface texture measurement C016 / 3806
Surface texture measurement. Optical instrument, based on a light microscope, being calibrated for areal (three-dimensional) topography

Nanomechanical measurement references C016 / 3801
Nanomechanical measurement references in their case. These calibrated reference grids are used for nanomechanical measurements. This is a Datasure toolkit

Surface texture measurement C016 / 3804
Surface texture measurement. Optical instrument, based on a light microscope, being calibrated for areal (three-dimensional) topography

Nanomechanical measurement references C016 / 3802
Nanomechanical measurement references. These calibrated reference grids are used for nanomechanical measurements. These ones are part of a Datasure toolkit

Surface texture measurement C016 / 3803
Surface texture measurement. Optical instrument, based on a light microscope, being calibrated for areal (three-dimensional) topography

Metrology gauge room. Researchers working with high-precision gauges in a metrology (measurements) laboratory. Photographed in the Metrology Division at the National Physical Laboratory, Teddington

Dilatometer-comparator apparatus. This apparatus is used to calibrate standard measurements. This is a 1-metre dilatometer-comparator

Mass balance. Researcher using a high-precision mass balance in a standards laboratory. Photographed in the Standards Division at the National Physical Laboratory, Teddington, UK

Vertical collimator. Researcher looking through the eyepiece of a vertical collimator. This device is designed to narrow and focus light onto a particular point

Deadweight machine, 1953
Deadweight machine. This is a 50-ton deadweight machine using the standard ton. Deadweight machines use large weights of a high accuracy, and are used to calibrate other weights

Drill gauge

Architecture. Set square on architectural drawings

External micrometer

Set square

Dial calipers

Electrical certification, 19th century
Electrical certification. This is the calibration room of the Central Electricity Laboratory (Laboratoire Central d Electricite, LCE), Paris, France

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"Precision in Measurement: The Art of Calibration" Calibration, a fundamental process in ensuring accurate measurements, plays a crucial role in various industries. From hydrometers and hygrometers C017/3433 to aircraft like the Hawker Siddeley Andover C. 1 XS643 and XS639, Gloster Javelin FAW. 9 XH897, English Electric Canberra B. 2 WJ814 M, Aeritalia G. 222RM MM62140 - 14-21 and MM62141 - 14-22, Piaggio PD-808RM MM62016, Alenia G. 222RM MM62141 - 14-22 and Alenia G. 222RM MM62140 - 14-21; calibration ensures precise readings. Hydrometers and hygrometers are vital instruments used for measuring liquid density or humidity levels respectively. Through meticulous calibration processes, these devices are fine-tuned to deliver accurate results essential for scientific experiments or industrial applications. In the aviation industry, accuracy is paramount to ensure safe flights and optimal performance of aircraft such as the Hawker Siddeley Andover C. 1 XS643 and XS639 models along with other notable planes like Gloster Javelin FAW. 9 XH897 or English Electric Canberra B. 2 WJ814 M bombers. Similarly, military aircraft like the Aeritalia G. 222RM MM62140 - 14-21 & MM62141 - 14-22 as well as Piaggio PD-808RM MM62016 rely on precise calibration for navigation systems that guide them through challenging missions. The Alenia G. 222RM series also benefits from meticulous calibration procedures to maintain their operational efficiency across diverse environments encountered during transport operations. Calibration involves comparing measurements against known standards while making necessary adjustments to eliminate any discrepancies between observed values and true values. By calibrating instruments regularly using sophisticated techniques and equipment, industries can ensure the reliability of their measurements.