- Mounted Crossbowman
- Crossbowmen practising at the target
- Archer and Crossbowman of about 1370
- Shooting rabbits with the crossbow
- Crossbowmen
- Different forms of crossbow bolts
- A store of crossbow bolts, shafts and heads
- Crossbowman approaching game
- A ship of war, wth crossbowmen
- Crossbowman, about 1430
- Hunters with crossbows
- Norman Crossbowmen
- Hunters with crossbows
- Model of Roman Catapult
- rotating crank-catch turned 90°
- the block released
- 36-inch searchlight and controller
- Frankford arsenal time percussion or combination fuse - Model 1900
- boat-telephone
- Frankford arsenal 21-second combination fuse
- Frankford arsenal centrifugal fuses
- Block swings free to right of gun
- Breech in normal position—closed
- 5 inch R.F. gun and breech mechanism
- An assembled mine
- 36-inch searchlight and controller