Weems and Plath Endurance 125 Clock - Manual (Page 5)

12. When resistance is felt press firmly downwards to cause the Slide 'n
Lock dimples to clip into place. (This is the reverse of step 1 above.)
This will hold the instrument firmly in place to prevent it from moving or
dislodging.
13. To remove the instrument for safe storage, calibration, adjustment or
battery change, reverse steps 8 & 9 of the installation procedure.
Additional tips if mounting more than one instrument.
1. The rear diameter of each instrument is 6" (150mm). If mounting 2 or
more instruments side by side ensure the center points are; A) at least
6-1/2" (165mm) apart; B) at least 4" (100mm) below any ceiling, shelf
or other overhead obstructing coving; and C) 3-1/4" (82mm) above
any lower shelf, floor or table fixture, otherwise Slide 'n Lock dovetail
engagement cannot be made.
2. Also ensure center points are at least 3-1/4" (82mm) away from any
side obstruction or corner.
3. If mounting 2 or more units vertically above one another review items 1
& 2 (this section) regarding clearances to top, side and bottom. Multiple
center points must be at least 6-1/4" (170mm) apart vertically.
4. When mounting instruments to vertically oriented mounting plates,
install lower ones first and progress vertically.