Working machines small enough to disappear on a desk

A vacuum cleaner can be smaller than a fingernail. A washing machine can weigh less than a packet of crisps. Once ordinary devices are reduced to a few millimetres, familiar buttons, motors and wires start to look like watchmaking parts. The harder trick is keeping the object functional after nearly all of its working space has vanished.

An arcade cabinet shorter than an AA battery

Kiran Patil's arcade machine measures 24.85 mm high, 15.25 mm long and 15.1 mm wide. It has tactile controls and runs an emulated version of Space Invaders, so this is a playable cabinet rather than a static model. Guinness World Records says Patil completed the record attempt on 20 July 2025 after returning to a prototype he had first explored during the pandemic. Source: Guinness World Records.

A working drill only 6.1 mm tall

Patil also built a working drill measuring 6.1 mm high, 6.7 mm long and 4.6 mm wide. The record dates to 19 April 2019, and the device is roughly thirty times smaller than a regular drill. At that scale, even the housing is barely wider than the head of a small screw. Source: Guinness World Records.

A vacuum cleaner narrower than a fingernail

Pamarthi Siva Naga Rao's vacuum cleaner measures 0.552 cm by 1.44 cm. Guinness World Records verified it in Vijayawada, India, on 16 April 2024, marking the third time Rao had held this particular title. Its shortest side is just 5.52 mm, about the width of a grain of rice. Source: Guinness World Records.

A washing machine that weighs 12.1 grams

Jeevanandham B assembled a washing machine measuring 26.3 by 27.2 by 28.1 mm. The completed appliance weighed 12.1 grams, and the official record notes that the build took one hour and twelve minutes. It is a laundry machine with the proportions of a large game piece; the missing ingredient is a sock small enough to justify using it. Source: Guinness World Records.

A robot arm just longer than a paperclip

Seventeen-year-old Hiten Dharpure built a robot arm measuring 39.25 mm. The three-axis device can reach, grip and move tiny objects, with its motion controlled through an Arduino-based system programmed in C and C++. Dharpure designed the frame in CAD and went through repeated prototypes when thin printed parts snapped under motor torque. Source: Guinness World Records.

A humanoid shorter than the width of a credit card

Mitsuya Tatsuhiko's humanoid robot stands 57.676 mm tall. It uses a compact parallel linkage in its legs and had to pass formal measurement by a registered surveyor. The final record machine was Tatsuhiko's third version; earlier shape-memory-alloy actuators made the movement too slow and awkward. Source: Guinness World Records.

A 25 mm radio-controlled car

Sony's 25 mm radio-controlled car is a 1:90-scale model of a Mercedes-Benz Smart. Developed by Michihiro Hino in 2002, it uses a micro nickel-metal-hydride rechargeable battery and can run for about fifteen minutes on a full charge. Put it beside a coin and the coin becomes the garage door. Source: Guinness World Records.

A digital camera close to a one-inch cube

Hammacher Schlemmer released a digital camera in 2011 measuring 28.58 by 27 by 25.4 mm. The camera captures 1.9-megapixel stills and video, stores them on a 2 GB SD card, and transfers files over USB. Its battery lasts about thirty minutes, which may be long enough to photograph the moment you misplace it. Source: Guinness World Records.

A weather station that fits in one palm

Dharpure's earlier record was a weather station measuring 74 by 44 by 60 mm. It reads humidity, temperature and air pressure, packing the sensors and processing circuitry into a body smaller than many computer mice. The station was recorded on 22 April 2025, before he turned his attention to moving joints and micro-servos. Source: Guinness World Records.

A lit building on the head of a pin

David A. Lindon's illuminated sculpture of the Golden Temple of Amritsar measures 1.5 by 0.75 mm. Inside sits a tiny light-emitting diode linked to copper wire, and the light can be switched on and off. Lindon works under a microscope, regulates his breathing and often builds at night to avoid vibration from passing traffic. Source: Guinness World Records.

Extreme miniaturisation has a blunt test: the object still has to do its job. A cabinet must run a game, a robot has to move, and a washing machine needs a full cycle. The measurements get the certificate, but the stubborn little motor that still turns is what makes these objects fun to look at.