Combination blocks for Talboys block heater

NB.73

Holds six 6 mm, five 12/13 mm, and three 25 mm tubes.
These blocks have been designed for variable sized samples. Single block.

to hold 3 x 25 mm tubes
to hold 5 x 12/13 mm tubes
to hold 6 x 6 mm tubes

Troemner 949107

8.3 mm × 48.4 mm