3M 91057, Scotch Restickable Mounting Squares R100S, 1 in x 1 in (2.54 cm x 2.54 cm) 18/pk, 7100245428 
Insize 6300, MICROMETER STAND, 6928640307294
$51.04
Suitable for micrometers up to 4″.
Length 4.567″
Jaw Opening .787″
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