| 摘要 |
A sledge (2) is fitted in two or more guides (2') on which its low friction parts run. On the underside of the four-sided lower part (1) of the structure are friction cushions (3) which enable the device to be fitted on a table top (20). To increase retention, a stop edge (21) is fitted on the incorporated break pulley (10) which is fixed in the central parts of the underside and the sledge. A marking pen (25) is fitted to the sledge, and records a graph. A line (9) passes over the pulley and has a weight (11) suspended at its end. Both rough and fine aiming of a weapon to be tested (26) are possible, and final adjustments to its alignment are by bolts (8,12,13). An electromagnet (14) is attached to the weapon for firing by a suitable rapid coupling (28). |
