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- "A1","bicycle chain and gears","chain and sprocket"
- "A13","Nutcrackers","class 2 lever"
- "A14","Zip","wedge"
- "A15","Corkscrew","screw"
- "A16","can opener","class 1 lever"," wedge","crank"
- "A17",scissors","class 1 levers"
- "A2","bicycle gears","spur gears"
- "A20","wooden peg gripping pencil","class 1 lever"
- "A22","Isaf Felin waterwheel"
- "A23","Isaf Felin sack hoist","belt drive"
- "A24","Isaf Felin spur wheel and main drive shaft","bevel gears"
- "A25","Isaf Felin overshot wheel"
- "A26","water lift pump handle down","class 1 lever"
- "A27","water lift pump handle up","class 1 lever"
- "A29","up Llanberis pass"
- "A3","bicycle front sprocket","chain and sprocket"
- "A30","Snowdon Mountain Railway; track and points","class 1 lever","rack and pinion"
- "A31","Snowdon Mountain Railway; points levers","class 1 lever"
- "A32","Snowdon Mountain Railway logo","rack and pinion"
- "A33","Snowdon Mountain Railway tracks","rack and pinion"
- "A34","Snowdon Mountain Railway - start"
- "A35","Snowdon Mountain Railway"
- "A36","Snowdon Mountain Railway"
- "A37","Snowdon Mountain Railway"
- "A38","Snowdon Mountain Railway"
- "A39","Snowdon Mountain Railway - summit in mist"
- "A4","can ring pull","class 1 lever"
- "A6","Windmill; Lytham St Annes"."inclined plane"
- "A7","car jack","crank","screw","levers"
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