All items

Ellipsograph

294 tris

Atwood machine

980 tris

Handheld two-mirror periscope with opposite open viewing hoods

484 tris

Hanging gravity camp shower with hollow hose and perforated spray head

2,212 tris

Railway transfer table

972 tris

Stirling engine

4,420 tris

Open-frame toy gyroscope with captured rim-weighted flywheel

772 tris

Open canvas firewood carrier with captured handles and three seated logs

788 tris

Box hurdy-gurdy with open keys

1,392 tris

Galton board

3,132 tris

Michelson interferometer

644 tris

Slide whistle with open voicing window and captured pitch piston

736 tris

Wall-mount lever can crusher with linked guided compression platen

872 tris

Electric monowheel

1,368 tris

Vertical bagel slicer with guided blade and open semicircular cradle

576 tris

Wooden lucet cord-making fork with open yarn guide eye

168 tris

Six-wheel motor grader

1,588 tris

Rotary warning siren

1,792 tris

Seismograph

1,274 tris

Right-angle corner clamp with diagonal screw and two-face pressure jaw

1,384 tris

Handheld niddy-noddy with perpendicular skein winding arms

576 tris

Sliding-pin contour gauge with captured profile fingers and lock lever

1,848 tris

Guitar tuning peg winder with open rectangular socket and rotating grip

492 tris

Radial engine on a stand

4,724 tris